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D.
Mukhopadhyay, P. K. Basu, V.Ramgopal Rao,"Physics and
Technology:Towards Low-Power DSM Design", Tutorial to be conducted
at the 18 th International Conference on VLSI Design, Jan 3-7, 2005,
Calcutta,India
Neeraj K. Jha, P. Sahajananda Reddy and V.Ramgopal Rao, "A New Drain
Voltage Enhanced NBTI Degradation Mechanism", Accepted for oral
presentation, International Reliability Physics Symposium (IRPS),April
17 ~V 21, 2005, San Jose, California, USA
V.Ramgopal Rao, "CMOS Device Design for Mixed
Signal Applications"Short course to be conducted at the 16th Asia
Pacific Microwave Conference (APMC-04), Dec 15-18, 2004 New Delhi (Invited)
D. R. Nair, N. R. Mohapatra, S. Mahapatra, S. Shukuri and J. Bude,"Effect of P/E
cycling on drain disturb in Flash EEPROMs under CHEand CHISEL
operation", IEEE Trans. Device and Materials Reliability,v.4, p.32,
2004.
D. R. Nair, S. Mahapatra, S. Shukuri and J. Bude,
"Drain disturb
during CHISEL programming of NOR Flash EEPROMs ~V Physical
mechanisms and impact of technological parameters", IEEE Trans.
Electron Devices, v.51, p.701, 2004.
S. Mahapatra, M. A. Alam, P. Bharath Kumar, T.
R. Dalei and D. Saha,"Mechanism of Negative Bias Temperature
Instability in CMOS Devices:Degradation, Recovery and Impact of
Nitrogen", Invited paper,International Electron Devices Meeting (IEDM),
San Francisco, CA,USA, 2004.
V.Ramgopal Rao, "Current Trends in Hybrid Micro-Nano-Molecular
Electronics", International Microelectronics and Packaging Society
(IMAPS) INDIA National Conference (IINC)", Bangalore November
27-28,2004 (Invited)
K. Narasimhulu, Siva G.Narendra, and V. Ramgopal
Rao, ~SEffect of Process Variations on Device and Circuit Parameters
with LAC/DH MOSFETs~T, proceedings of the 17 th IEEE International
Conference on VLSI Design, January 7-9, 2004, Mumbai, India
Bhawna Tomar, V. Ramgopal Rao, "Sub-threshold Swing
Degradation due to Localized Charge Storage in SONOS
Memories",Proceedings of 11 th IEEE International Symposium on
Physical and Failure Analysis of Integrated Circuits, July 5-8, 2004
Hinshcu, Taiwan Neeraj Jha, V.Ramgopal Rao,
"Understanding the NBTI Degradation in Halo- Doped Channel p-MOSFETs"
Proceedings of the 11th IEEE International Symposium on Physical and
Failure Analysis of Integrated Circuits, July 5-8, 2004 Hinshcu,
Taiwan
V.Ramgopal Rao, "System on Chip using CMOS", Workshop on
Nanotechnology, VNIT, Nagpur, Sponsored by the IEEE Bombay
Section,July 15-16, 2004 (Invited)
K. Narasimhulu, V. Ramgopal Rao, "Understanding
the Impact of Process Variations on Analog Circuit Performance with
HaloChannel Doped Deep Sub-Micron CMOS Technologies", Proceedings of
the 35th International Conference on Solid State Devices and
Materials (SSDM 2004), Tokyo,Japan, September 15-17, 2004
Pradeep Kumar Chawda, B. Anand, and V.Ramgopal
Rao, "Effectiveness of Optimum Body Bias for Leakage Reduction in
High K CMOS Circuits",Proceedings of the 35 th International
Conference on Solid State Devices and Materials (SSDM 2004), Tokyo,
Japan, September 15-17,2004
V.Ramgopal Rao, "Nanotechnology-A revolution in progress",
'Electrical & Electronics' magazine, June, 2004 (Invited)
D. R. Nair, S. Mahapatra, S. Shukuri and J. Bude,
"Multi-Level
Programming of NOR Flash EEPROMs by CHISEL Mechanism",
Proceedings,Int. Reliability Phys. Symp (IRPS), Phoenix, USA, p.635,
2004.
P. R. Nair, P. Bharath Kumar, R. Sharma, S. Kamohara and S.
Mahapatra, "A Comprehensive Trapped Charge Profiling Technique for
SONOS Flash EEPROMs", accepted, International Electron Devices
Meeting (IEDM), San Francisco, CA, USA, 2004
S. Mahapatra, P. Bharath Kumar and M. A. Alam, "Investigation and
Modeling of Interface and Bulk Trap Generation During Negative Bias
Temperature Instability of p-MOSFETs", IEEE Trans. Electron
Devices,v.51, p.1371, 2004.
D. R. Nair, S. Mahapatra and S. Shukuri, "Cycling endurance of NOR
Flash EEPROM cells under CHISEL programming operation - Impact of
technological parameters and scaling", accepted, to appear in IEEE
Trans. Electron Devices, v.51, p.1672, 2004.
M. A. Alam and S. Mahapatra, "A Comprehensive Model of PMOS NBTI
Degradation", accepted, to appear in Microelectronics
Reliability,special issue on NBTI, 2004 (Invited paper)
S. Mahapatra, S. Shukuri and J. Bude, "Substrate bias effect on
cycling induced performance degradation of scaled flash
EEPROMs",Proceedings, 16th IEEE VLSI Design Conference, New Delhi,
India,p.223, 2003.
N. R. Mohapatra, S. Mahapatra, V. R. Rao, S. Shukuri and J.
Bude,"Effect of programming biases on the reliability of CHE and
CHISEL flash EEPROMs", Proceedings, Int. Reliability Phys. Symp (IRPS),Dallas,
USA, p.518, 2003.
D. R. Nair, N. R. Mohapatra, S. Mahapatra, S.
Shukuri and J. Bude,"The effect of CHE and CHISEL programming
operation on drain disturb in flash EEPROMs", Proceedings, 10th
International Symposium on the Physical and Failure Analysis of
Integrated Circuits, Singapore,p.164, 2003.
N. R. Mohapatra, D. R. Nair, S. Mahapatra, V. R. Rao and S.
Shukuri,"The Impact of Channel Engineering on the Performance
Reliability and Scaling of CHISEL NOR Flash EEPROMs", Proceedings,
33rd European Solid State Device Research Conference (ESSDERC),
Lisbon, Portugal,p.541, 2003.
D. R. Nair, N. R. Mohapatra, S. Mahapatra and S. Shukuri, "The
Impact of Technology Parameters and Scaling on the Programming
Performance and Drain Disturb in CHISEL Flash EEPROMs",
Proceedings,International Conference on Solid State Devices and
Materials (SSDM),Tokyo, Japan, p.644, 2003.
K. G. Anil, S. Mahapatra and I. Eisele, "A detailed experimental
investigation of impact ionization in n-channel
metal-oxide-semiconductor field-effect-transistors at very low drain
voltages", Solid State Electron, v.47, p.995, 2003.
S. Mahapatra,
P. Bharath Kumar and M. A. Alam, "A new observation of enhanced bias
temperature instability in thin gate oxide p-MOSFET",Tech. Digest,
International Electron Devices Meeting (IEDM),Washington, DC, USA,
p.337, 2003.
A.Dixit, and V. Ramgopal Rao, ~SA Novel Dynamic
Threshold Operation Using Electrically Induced Junction MOSFET in
the Deep sub-micrometer CMOS Regime~T, Proceedings of the 16th IEEE
International Conference on VLSI Design, January 4-8, 2003, New
Delhi, India
N.R Mohapatra, M.P.Desai, and V. Ramgopal Rao ~SDetailed
Analysis of FIBL in MOS Transistors with High-K Gate Dielectrics~T,
Proceedings of the 16th IEEE International Conference on VLSI
Design, January 4-8, 2003, New Delhi, India
D. Vinay Kumar, N. R.Mohapatra, V. Ramgopal Rao, and M. B.
Patil,"Application of the look-up table approach to high-K
dielectric MOS transistor circuits," Proceedings of the 16th IEEE
International Conference on VLSI Design, January 4-8, 2003, New
Delhi, India
Najeeb-ud-Din, V.Ramgopal Rao, and J.Vasi, ~SSmall
Signal Characteristics of Thin Film Single Halo SOI MOSFETs for
Mixed Mode Applications~T, Proceedings of the 16th IEEE
International Conference on VLSI Design, January 4-8, 2003, New
Delhi, India
Nihar. R. Mohapatra, S. Mahapatra, V.
Ramgopal Rao, S. Shukuri and J.Bude, ~SEffect of Programming Biases
on the Reliability of CHE and CHISEL Flash EEPROMs~T, Proceedings of
the International Reliability Physics Symposium (IRPS) 2003, March
30 - April 3, 2003, Dallas,Texas, USA
A. Prasad, V. Agarwal, R. O. Dusane, and V. Ramgopal Rao, ~SStudy of
Plasma Immersion Ion Implantation Induced Damage on Ultra-thin Gate
Dielectrics~T, Accepted, 203rd Meeting of The Electrochemical
Society, Paris, France, April 27-May 2, 2003 (Symposium on "Thin
Film Materials, Processes, and Reliability: Plasma\\Processing for
the 100 nm Node and Copper Interconnects\\ with Low-k Inter Level
Dielectric Films)
Nihar Mohapatra, Deleep Nair, Souvik Mahapatra, V. Ramgopal
Rao,Shoji Shukuri, "The Impact of Channel Engineering on the
Performance Reliability and Scaling of CHISEL NOR Flash EEPROMs",
33rd European Solid-State Device Research Conference (ESSDERC) 2003:
16 - 18 September 2003, pp. 541-544, Lisbon, Portugal
K.N.Manjularani, V.Ramgopal Rao, J.Vasi, "Relaibility
of Ultrathin JVD Silicon Nitride MNSFETs under High Field
Stressing"Proceedings of the 10 th IEEE International Symposium on
Physical and Failure Analysis of Integrated Circuits, 7-11 July
2003, Singapore
V.Ramgopal Rao, K.Narasimhulu,"Novel Device
Architectures and Processes for the 65 nm CMOS Technology Node and
Beyond", Indian National Academy of Engineering (INAE) Conference on
Nanotechnology(ICON-2003), Dec. 22-23, 2003, Chandigarh, India
(Invited)
Najeeb-ud-Din, V. Ramgopal Rao, and J. Vasi, "Thin Film Single Halo
(SH) SOI nMOSFETs - Hot Carrier Reliability for Mixed Mode
Applications" IEEE TENCON 2003, Convergent Technologies for the
Asia-Pacific, OCTOBER 14-17, 2003,BANGALORE, INDIA
K.N.Manjularani, V.Ramgopal Rao,J.Vasi,
"Characterization of
High-Field Stress-Induced Border Traps in JVD Si3N4 Transistors by
Drain urrent Transient and 1/f Methods" 34th IEEE Semiconductor
Interface Specialists Conference (SISC), December 4-6,
2003,Washington, D.C., USA
N.R Mohapatra, S. Mahapatra and V. Ramgopal Rao,
~SBias and Time Dependene of Damage Generation in n-Channel MOS
Transistors Operating Pulsed AC Stress Degradation in Thin Gate
Oxide MOSFETs~T Proceedings of the 9 th IEEE International Symposium
on Physical and Failure Analysis of Integrated Circuits, 8-12 July
2002, Singapore
Neeraj .K. Jha, M. Shojaei, V.Ramgopal Rao, ~SPerformance and
Reliability of Single Pocket Deep Submicron MOSFETs for Analog
Applications~T, Proceedings of the 9 th IEEE International Symposium
on Physical and Failure Analysis of Integrated Circuits, 8-12 July
2002, Singapore
Neeraj K. Jha, V. Ramgopal Rao, and J.C.S.Woo, "Optimization of
Single Halo p-MOSFET Implant Parameters for Improved Analog
in the Substrate Enhanced Gate Current Regime~T Proceedings of the 9
th IEEE International Symposium on Physical and Failure Analysis of
Integrated Circuits, 8-12 July 2002, Singapore
Neeraj K. Jha, V. Ramgopal Rao, and J.C.S.Woo,
"Optimization of
Single Halo p-MOSFET Implant Parameters for Improved Analog
Performance and Reliability", Proceedings of the 32 nd European
Solid-State Device Research Conference (ESSDERC), 24 - 26 September
2002, Florence, Italy
Parag C. Waghmare, Samadhan B. Patil, Alka A. Kumbhar, Laxmi Sahoo,V.
Ramgopal Rao, and R.O. Dusane, ~SNitrogen dilution effects on
structural and electrical properties of hot wire deposited a-SiN:H
films for Deep Sub-micron CMOS Technologies~T, Proceedings of the
International Conference on Cat-CVD (Hot-Wire CVD) Process, Denver,
CO, USA, September 10-13, 2002
Samadhan B. Patil, Anand V. Vairagar, Alka A. Kumbhar, Laxmi K.
Sahu,V. Ramgopal Rao, N. Venkatramani, R. O. Dusane and B.
Schroeder,~SHighly Conducting P+- PolySi Deposited by HWCVD and its
Applicability As Gate Material for CMOS Devices~T Proceedings of the
International Conference on Cat-CVD (Hot-Wire CVD) Process,
Denver,CO, USA, September 10-13, 2002
A.V. Vairagar, S.B. Patil, D.J. Pete, R.O. Dusane,,
N. Venkatramani and V.Ramgopal Rao, "Suppression of Boron Penetration
by Hot Wire CVD Polysilicon" Accepted, 9 th IEEE International
Symposium on Physical and Failure Analysis of Integrated Circuits,
8-12 July 2002, Singapore
N.R Mohapatra, S. Mahapatra and V. Ramgopal Rao,
"Bias and Time Dependene of Damage Generation in n-Channel
MOS Transistors Operating in the Substrate Enhanced Gate Current
Regime" Proceedings of the 9 th IEEE International Symposium
on Physical and Failure Analysis of Integrated Circuits, 8-12 July
2002, Singapore
Yatin M. Mutha, R. Lal and V.Ramgopal Rao, "Physical
Mechanisms for Pulsed AC Stress Degradation in Thin Gate Oxide MOSFETs"
Proceedings of the 9 th IEEE International Symposium on Physical
and Failure Analysis of Integrated Circuits, 8-12 July 2002, Singapore
Neeraj .K. Jha, M. Shojaei, V.Ramgopal Rao, "Performance
and Reliability of Single Pocket Deep Submicron MOSFETs for Analog
Applications", Proceedings of the 9 th IEEE International Symposium
on Physical and Failure Analysis of Integrated Circuits, 8-12 July
2002, Singapore
Nihar R. Mohapatra, Madhav P. Desai, Siva G. Narendra,
V. Ramgopal Rao, "The Effect of High-K Gate Dielectrics on
Deep Sub-micrometer CMOS Device and Circuit Performance" IEEE
Transactions on Electron Devices, vol.49, (no.5), May 2002, p.826-831
Najeeb-ud-Din, Aatish Kumar, Mohan V.Dunga, V.Ramgopal
Rao, J.Vasi, "Suppression of Parasitic BJT Action in Single
Pocket Thin Film Deep Sub-micron SOI MOSFETs", Proceedings
of the 2002 MRS Spring Meeting, San Francisco, California (April
1-5, 2002)
Nihar. R. Mohapatra, M. P. Desai, V. Ramgopal
Rao, "Effect of Technology Scaling on MOS Transistors with
High-K Gate Dielectrics", Proceedings of the 2002 MRS Spring
Meeting, San Francisco, California (April 1-5, 2002)
Krishna K. Bhuwalka, Nihar. R. Mohapatra, Siva
G.Narendra, V. Ramgopal Rao, "Effective dielectric thickness
Scaling for High-K Gate Dielectric MOSFETs", Proceedings of
the 2002 MRS Spring Meeting, San Francisco, California (April 1-5,
2002)
P.C.Waghmare, S.B.Patil, A.Kumbhar, R.O.Dusane,
and V.Ramgopal Rao, "Improvement of Gate Dielectric Quality
of MNS Capacitors by Hydrogen Etching for Ultra Thin Gate Dielectrics",
Proceedings of the 2002 MRS Spring Meeting, San Francisco, California
(April 1-5, 2002)
K. N. ManjulaRani, V. Ramgopal Rao and J. Vasi,
"Degradation Study of Ultra-Thin JVD Silicon Nitride MNSFET",
Proceedings of the 2002 MRS Spring Meeting, San Francisco, California
(April 1-5, 2002)
Nihar. R. Mohapatra, Souvik Mahapatra and V. Ramgopal
Rao, "Device Scaling Effects on Substrate Enhanced Degradation
in MOS Transistors", Proceedings of the 2002 MRS Spring Meeting,
San Francisco, California (April 1-5, 2002)
A.Dixit, R.O.Dusane, and V.Ramgopal Rao, "Electrically
Induced Junction MOSFET for High Performance Sub 50 nm CMOS Technology",
Proceedings of the 2002 MRS Spring Meeting, San Francisco, California
(April 1-5, 2002)
Yatin Mutha, K.N.ManjulaRani, R.Lal and V.Ramgopal
Rao, "Polarity Dependence of Degradation in Ultra Thin Oxide
and JVD Nitride Gate Dielectrics", Proceedings of the 2002
MRS Spring Meeting, San Francisco, California (April 1-5, 2002)
D.G.Borse, Manjula Rani K.N., Neeraj K. Jha, A.N.
Chandorkar, J.Vasi, V. Ramgopal Rao, B.Cheng, J.C.S. Woo, "Optimization
and Realization of Sub 100nm Channel Length Single Halo p-MOSFETs"
IEEE Transactions on Electron Devices, vol.49, (no.6), June 2002.
K. G. Anil, S. Mahapatra and I. Eisele, "Electron-electron
interaction signature peak in the substrate current vs gate voltage
characteristics of n-channel silicon MOSFETs", IEEE Trans.
Electron Devices (submitted)
K. G. Anil, S. Mahapatra and I. Eisele, "A
detailed experimental investigation of impact ionization in n-channel
MOSFETs at very low drain voltages", Solid State Electron (submitted)
S. Mahapatra, S. Shukuri and J. Bude, "CHISEL
flash EEPROM part-I: performance and scaling", IEEE Trans.
Electron Devices (submitted)
S. Mahapatra, S. Shukuri and J. Bude, "CHISEL
flash EEPROM part-II: reliability", IEEE Trans. Electron Devices
(submitted)
S. Mahapatra and M. A. Alam, "Hole energy
dependent anomalous, yet universal interface degradation in p-MOSFETs",
IEEE Electron Devices Lett. (submitted)
P.C.Waghmare, S.B.Patil, A.Kumbhar, R.O.Dusane,
and V.Ramgopal Rao, "Reliability Issues of Ultra Thin Silicon
Nitride by Hot-Wire CVD for Deep Sub-Micron CMOS Technologies",
Proceedings of the 11 th International Workshop on The Physics of
Semiconductor Devices, December 11-15, 2001, Delhi, India
Mayank Gupta, V.Vidya, V.Ramgopal Rao, Kun H.
To, Jason C.S. Woo, "Optimization of Sub 100 nm Gamma-Gate
Si-MOSFETs for RF Applications" Proceedings of the 11 th International
Workshop on The Physics of Semiconductor Devices, December 11-15,
2001, Delhi, India
Nihar. R. Mohapatra, Souvik Mahapatra and V. Ramgopal
Rao, "A Comparative Study of Degradation for NMOSFET's in CHE
and CHISEL Injection Regime", Proceedings of the 11 th International
Workshop on The Physics of Semiconductor Devices, December 11-15,
2001, Delhi, India
K.N. Manjularani, V.Ramgopal Rao, J.Vasi, "Border
Trap Generation in JVD Nitride Capacitors Under High Field Stressing",
31 st IEEE Semiconductor Interface Specialists Conference, November
28 - December 1, 2001, Washington D.C, USA
P.Poornima, S.K.Tripathy, V.Ramgopal Rao, and
D.K.Sharma, "Resolution Enhancement Techniques for Optical
Lithography", Proceedings of the 11 th International Workshop
on The Physics of Semiconductor Devices, December 11-15, 2001, Delhi,
India (Invited)
Najeeb-ud-Din, V.Ramgopal Rao, and J.Vasi, "Characterization
and simulation of Lateral Asymmetric Channel Silicon-on-Insulator
MOSFETs", Proceedings of the 11 th International Workshop on
The Physics of Semiconductor Devices, December 11-15, 2001, Delhi,
India
K.N.ManjulaRani, V.Ramgopal Rao, and J.Vasi, "High
Field Stressing Effects in JVD Nitride Capacitors", Proceedings
of the 11 th International Workshop on The Physics of Semiconductor
Devices, December 11-15, 2001, Delhi, India
K. G. Anil, S. Mahapatra and I. Eisele, "Experimental
verification of the nature of the high energy tail in the electron
energy distribution in n-channel MOSFETs", IEEE Electron Devices
Lett., v.22, p.478, Oct. 2001.
Najeebuddin, Aatish Kumar, Mohan V.Dunga, V.Ramgopal
Rao, J.Vasi, "Characterization of Lateral Asymmetric Channel
(LAC) Thin Film SOI MOSFETs", 6 th International Conference
on Solid-State and Integrated Circuit Technology (ICSICT), Shanghai,
China, 22-25 th October, 2001 (Invited)
Nihar. R. Mohapatra, M. P. Desai, Narendra Siva,
V. Ramgopal Rao, "The Impact of High-K Gate Dielectrics on
Sub 100nm CMOS Circuit Performance", Proceedings of the 31
st European Solid-State Device Research Conference (ESSDERC), 11
- 13 September 2001, Nuremberg, Germany, September, 2001.
Nihar Mohapatra, Souvik Mahapatra, V.Ramgopal
Rao, ""Study of Degradation in Channel Initiated Secondary
Electron Injection Regime", Proceedings of the 31 st European
Solid-State Device Research Conference (ESSDERC), 11 - 13 September
2001, Nuremberg, Germany, September, 2001.
Parag C.W, Samadhan Patil, Alka Kumbhar, R.O.Dusane,
V.Ramgopal Rao, "Ultra thin Silicon Nitride by Hot Wire CVD
for Deep Sub-Micron CMOS Technologies", Proceedings of the
Micro and Nanoengineering (MNE'01) Conference, September16-19, 2001,France
Mohan V. Dunga, Aatish Kumar, and V. Ramgopal
Rao, "Analysis of Floating Body Effects in Thin Film SOI MOSFETs
using the GIDL Current Technique", Proceedings of 8 th IEEE
International Symposium on Physical and Failure Analysis of Integrated
Circuits, 9-13 July 2001, Singapore
Aatish Kumar, Rakesh Lal, and V. Ramgopal Rao,
"A Simple and Direct Technique for Interface Characterization
of SOI MOSFETs and its Application in Hot Carrier Degradation Studies
in Sub 100 nm JVD MNSFETs", Microelectronic Engineering, Vol.
59, p. 429-433, 2001
K. G. Anil, I. Eisele and S. Mahapatra, "Observation
of double peak in the substrate current versus gate voltage characteristics
in n-channel MOSFETs", Appl. Phys. Lett., v.78, no.15, p.2238,
April 2001.
S. Mahapatra, V. Ramgopal Rao, B. Cheng, M. Khare, C. D. Parikh,
J. C. S. Woo and J. Vasi, "Performance and Hot-Carrier Reliability
of 100 nm Channel Length Jet Vapor Deposited Si3N4 MNSFETs",
IEEE Transactions on Electron Devices, vol.48, (no.4), April 2001.
p.679-84
S. Mahapatra, V.Ramgopal Rao, B.Cheng, J.Vasi
and J.C.S.Woo "A Study of Hot-Carrier Induced Interface-Trap
Profiles in Lateral Asymmetric Channel MOSFETs Using a Novel Charge
Pumping Technique", Solid State Electronics, Vol. 45, p.1717-1723,
2001
Nihar.R.Mohapatra, A.Dutta, G.Sridhar, M.P.Desai
and V.Ramgopal Rao "Sub 100 nm CMOS Circuit Performance with
High-K Gate Dielectrics" Microelectronics Reliability, Vol.
41, p.1045-1048, 2001
Aatish Kumar, Souvik Mahapatra, Rakesh Lal, and
V. Ramgopal Rao, "Multi-Frequency Transconductance Technique
for Interface Characterization of Deep Sub-Micron SOI-MOSFETs",
Microelectronics Reliability, Vol. 41, p. 1049-1051, 2001
Samadhan B.Patil, A.Kumbhar, P.Waghmare, V.Ramgopal
Rao, and R.O.Dusane, "Low Temperatue Silicon Nitride deposited
by Hot-Wire CVD for Deep Sub-micron CMOS Devices", Thin Solid
Films, Vol. 395, p 270-274, 2001
Aatish Kumar, Rakesh Lal, and V. Ramgopal Rao,
"A Simple and Direct Technique for Interface Characterization
of SOI MOSFETs and its Application in Hot Carrier Degradation Studies
in Sub 100 nm JVD MNSFETs", Microelectronic Engineering, Vol.
59, p. 429-433, 2001
Kottantharayil Anil, Souvik Mahapatra, V.Ramgopal
Rao and I. Eisele, "Comparison of Sub-Bandgap Impact Ionization
in Sub-100 nm Conventional and Lateral Asymmetrical Channel nMOSFETs",
Japanese Journal of Applied Physics, Vol. 40 (2001) 2621-2626, Part
1, No. 4B, 30 April 2001
G. Shrivastav, S. Mahapatra, V. Ramgopal Rao,
J. Vasi, K. G. Anil, C. Fink, W. Hansch and I. Eisele "Performance
Optimization of 60 nm Channel Length Vertical MOSFETs Using Channel
Engineering", Proceedings of the 14th International Conference
on VLSI Design, January 2001, Bangalore, INDIA
Nihar.R.Mohapatra, A.Dutta, M.P.Desai and V. Ramgopal
Rao, "Effect of Fringing Capacitances in Sub 100 nm MOSFET's
with High-K Gate Dielectrics" Proceedings of the 14th International
Conference on VLSI Design, January 2001, Bangalore, INDIA
D.Vinay Kumar, Nihar R. Mahapatra, V. Ramgopal
Rao, and Mahesh B. Patil, "Look-up Table Simulator for Circuit
Simulation", To be published.
Anil K. G., S. Mahapatra and I. Eisele, "Role
of inversion layer quantization on sub-bandgap impact ionization
in deep-sub-micron n-channel
Parag C.W, Samadhan Patil, Alka Kumbhar, R.O.Dusane,
V.Ramgopal Rao, "Ultra thin Silicon Nitride by Hot Wire CVD
for Deep Sub-Micron CMOS Technologies", To appear in Microelectronics
Reliability
N.Mahapatra, M.P.Desai, and V.Ramgopal Rao, "Device
and Circuit Performance Issues with High-K Gate Dielectrics",
Proceedings of the National seminar on VLSI: Systems, Design and
Technology, IIT Bombay, Dec 2000
Nihar.R.Mohapatra, A.Dutta, G.Sridhar, M.P.Desai
and V.Ramgopal Rao "Sub 100 nm CMOS Circuit Performance with
High-K Gate Dielectrics" Proceedings of the 11th Workshop on
Dielectrics in Microelectronics (WoDiM), November 13-15, 2000, Munich,
Germany
Aatish Kumar, Souvik Mahapatra, Rakesh Lal, and
V. Ramgopal Rao, "Multi-Frequency Transconductance Technique
for Interface Characterization of Deep Sub-Micron SOI-MOSFETs",
Proceedings of the 11th Workshop on Dielectrics in Microelectronics
(WoDiM), November 2000, Munich, Germany
Samadhan B.Patil, A.Kumbhar, P.Waghmare, V.Ramgopal
Rao, and R.O.Dusane, "Low Temperatue Silicon Nitride deposited
by Cat CVD for Deep Sub-micron CMOS Devices", Proceedings of
the International Conference on Cat-CVD (Hot-Wire CVD) Process,
Kanazawa, Japan, November 2000
S.Mahapatra, V.Ramgopal Rao, J.Vasi, B.Cheng,
and J.C.S. Woo, "Reliability Studies on Sub 100 nm SOI-MNSFETs",
Proceedings of the International Integrated Reliability Workshop,
October 23-26, 2000, California, USA.
K.G. Anil, S. Mahapatra, I. Eisele, V.Ramgopal
Rao, and J. Vasi "Drain Bias Dependence of Gate Oxide Reliability
in Conventional and Asymmetrical Channel MOSFETs in the Low Voltage
Regime", Proceedings of the 30 th European Solid-State Device
Research Conference (ESSDERC), Ireland, September, 2000
K.G. Anil, S. Mahapatra, V. Ramgopal Rao and I.
Eisele, "Comparison of Sub-Bandgap Impact Ionization in Deep-Sub-Micron
Conventional and Lateral Asymmetrical Channel nMOSFETs", Proceedings
of the International Conference on Solid state Devices and Materials
(SSDM) Sendai, Japan, August 28-31, 2000
V. Ramgopal Rao, S. Mahapatra, J.Vasi, K. G. Anil,
C. Fink, W. Hansch and I. Eisele, "Hot-Carrier Performance
of 60 nm Channel Length Delta-Doped Vertical MOSFETs with High-pressure
Grown Oxide as a Gate Dielectric", Proceedings of the 30th
IEEE Semiconductor Interface Specialists Conference, San Diego,
California, USA
V. Ramgopal Rao, Rahul Sachdev, and C. R. Viswanathan,
"Oxide Thickness and Supply Voltage Scaling for Optimum Gate
Delay in sub 100 nm CMOS Technologies" To be published
V. Vidya, V. Ramgopal Rao, and J. Vasi, Kun H.
To and J.C.S. Woo, "Electrical Characterization of 60 nm Channel
Length Gamma-gate n-MOSFETs", To be published
R.Wagh, M.Sudhakar, and V.Ramgopal Rao, "A
Novel Charge Pumping Technique for Plasma Process Induced Interface
Damage Profiling in Sub-Micron MOSFETs" To be published
S.Mahapatra, C.D.Parikh, V.Ramgopal Rao, C.R.Viswanathan,
and J.Vasi, "A Comprehensive tudy of hot-carrier induced interface
and oxide trap distributions in MOSFETs using a novel charge pumping
technique", IEEE Transactions on Electron Devices, vol. 47,
p. 171-178, January, 2000
S.Mahapatra, C.D.Parikh, V.Ramgopal Rao, C.R.Viswanathan,
and J.Vasi, "Device Scaling Effects on Hot-Carrier Induced
Interface and Oxide Trap Distributions in MOSFETs", IEEE Transactions
on Electron Devices, vol. 47, p. 789-796, April 2000
M. Hemkar, J.Vasi, V. Ramgopal Rao, B. Cheng,
J.C.S. Woo, "Optimization and realization of sub 100 nm channel
length lateral asymmetric channel p-MOSFETS" Proceedings of
the SPIE - The International Society for Optical Engineering, vol.3975,
pt.1-2, (Tenth International Workshop on the Physics of Semiconductor
Devices, New Delhi, India, 14-18 Dec. 1999.) SPIE-Int. Soc. Opt.
Eng, 2000. p.584-7.
Sharad Sharma, and V. Ramgopal Rao, "Performance
Trade-offs by the Use of High-K Gate Dielectrics in Sub 100 nm CMOS
Technologies", Proceedings of the SPIE - The International
Society for Optical Engineering, vol.3975, pt.1-2, (Tenth International
Workshop on the Physics of Semiconductor Devices, New Delhi, India,
14-18 Dec. 1999.) SPIE-Int. Soc. Opt. Eng, 2000. p.896-9
Sushant S. Suryagandh, and V. Ramgopal Rao, "Dynamic
Threshold Voltage MOSFETs for Future Low Power Sub 1V CMOS Applications",
Proceedings of the SPIE - The International Society for Optical
Engineering, vol.3975, pt.1-2, (Tenth International Workshop on
the Physics of Semiconductor Devices, New Delhi, India, 14-18 Dec.
1999.) SPIE-Int. Soc. Opt. Eng, 2000. p.655-8
Samadhan B. Patil , Sangeeta Vaidya, Alka Kumbhar,
R. O. Dusane, A. N. Chandorkar and V. Ramgopal Rao, "Low Temperature
Hot-Wire CVD Nitrides for Deep Sub-Micron CMOS Technologies"
Proceedings of the SPIE - The International Society for Optical
Engineering, vol.3975, pt.1-2, (Tenth International Workshop on
the Physics of Semiconductor Devices, New Delhi, India, 14-18 Dec.1999.)
SPIE-Int. Soc. Opt. Eng, 2000. p.879-82
S. Mahapatra, K. N. Manjularani, V. Ramgopal Rao,
J. Vasi, " ULSI MOS Transistors with Jet Vapour Deposited (JVD)
Silicon Nitride for the Gate Insulator", Proceedings of the
SPIE - The International Society for Optical Engineering, vol.3975,
pt.1-2, (Tenth International Workshop on the Physics of Semiconductor
Devices, New Delhi, India, 14-18 Dec. 1999.) SPIE-Int. Soc. Opt.
Eng, 2000. p.803-10
B.Cheng, V.Ramgopal Rao and J.C.S.Woo, "Exploration
of Velocity Overshoot in a High-Performance Deep sub 100 nm SOI
MOSFET with Asymmetric Channel Profile" IEEE Electron Device
Letters, vol. 20, p. 538-540, October 1999
G. Shrivastav, S. Mahapatra, V. Ramgopal Rao,
C. D. Parikh and J. Vasi, K. G. Anil, C. Fink, W. Hansch and I.
Eisele " Performance Optimization of 60 nm Channel Length Vertical
MOSFETs Using Channel Engineering" Submitted to 29 th European
Solid-State Device Research Conference (ESSDERC), Leuven, Belgium
13 - 15 September 1999
S. Mahapatra, V. Ramgopal Rao, C. D. Parikh, J.
Vasi, B. Cheng, M. Khare and J. C. S. Woo , "Hot-Carrier Induced
Interface Degradation in Jet Vapor Deposited SiN MNSFETs as Studied
by a Novel Charge Pumping Technique" p. 592-595, 29 th European
Solid-State Device Research Conference (ESSDERC), Leuven, Belgium
13 - 15 September 1999
A. Inani, V. Ramgopal Rao, B. Cheng, P. Zeitzoff,
and J. C. S. Woo, "Capacitance Degradation due to Fringing
Fields in Deep Sub-Micron MOSFETs with High-K Gate Dielectrics"
p.160-163, 29 th European Solid-State Device Research Conference
(ESSDERC), Leuven, Belgium 13 - 15 September, 1999
B.Cheng, M.Cao, V.Ramgopal Rao, A.Inani, P.V.Voorde,
W.Greene, Z.Yu, H.Stork, and J.C.S.Woo, "The impact of high-k
gate dielectrics and metal gate electrode on sub 100 nm MOSFETs",
IEEE Transactions on Electron Devices, vol. 46, p. 1537, 1999
A.Inani, V.Ramgopal Rao, B.Cheng, and J.C.S. Woo,
"Gate Stack Architecture Analysis and Channel Engineering in
Deep Sub-Micron MOSFETs", Japanese Journal of Applied Physics,
Part 1, April 1999, vol.38, (no.4B): p. 2266-71
S.Mahapatra, C.D.Parikh, J.Vasi, V.Ramgopal Rao,
and C.R.Viswanathan, "A Direct Charge Pumping Technique for
Spatial Profiling of Hot-Carrier Induced Interface and Oxide Traps
in MOSFETs", Solid State Electronics, p. 915, vol. 43, 1999
V. Ramgopal Rao, W.Hansch, S. Mahaptra, D.K. Sharma,
J.Vasi, T.Grabolla, and I.Eisele, "Low Temperature-High Pressure
Grown Thin Gate Dielectrics for MOS Applications" Microelectronic
Engineering, vol. 48, p.223-226, 1999
S. Mahapatra, V. Ramgopal .Rao, C.D.Parikh, J.Vasi,
B.Cheng, and J.C.S.Woo, "A Study of 100 nm Channel Length Asymmetric
MOSFETs by Using Charge Pumping", Microelectronics Engineering,
vol. 48, p. 193-196, 1999
S. Mahapatra, V. Ramgopal .Rao, C.D.Parikh, J.Vasi,
B.Cheng, and J.C.S.Woo, "A Study of 100 nm Channel Length Asymmetric
MOSFETs by Using Charge Pumping", Proceedings of the Insulating
Films on Semiconductors (INFOS), June 1999, Kloster Banz, Germany
S.Mahapatra, V.Ramgopal Rao, K.N. Manjularani,
C.D. Parikh, J. Vasi, B. Cheng, M. Khare, and J.C.S. Woo, "100
nm Channel Length MNSFETs using a Jet Vapor Deposited Ultra-thin
Silicon Nitride Gate Dielectric", Technical Digest, 1999 Symposium
on VLSI Technology, June 14-19, Kyoto, Japan
B.Cheng, A.Inani, V.Ramgopal Rao, and J.C.S.Woo,
"Channel Engineering for High Speed Sub-1.0 V Power Supply
Deep Sub-Micron CMOS" Technical Digest, 1999 Symposium on VLSI
Technology, June 14-19, Kyoto, Japan
S. Mahapatra, V. Ramgopal Rao, C. D. Parikh, J.
Vasi, B. Cheng and J. C. S.Woo, "Hot-Carrier Induced interface
Trap Distributions in Conventional and Asymmetric Channel MOSFETs
as Determined by a novel Charge Pumping Technique" Presented
at the 30 th Semiconductor Interface Specialists Conference (SISC),
South Carolina, USA, December 1999
V. Ramgopal Rao, W.Hansch, S.Mahaptra, D.K.Sharma,
J.Vasi, T.Grabolla, and I.Eisele, "Low Temperature-High Pressure
Grown Thin Gate Dielectrics for MOS Applications", Proceedings
of the Insulating Films on Semiconductors (INFOS), June 1999, Kloster
Banz, Germany
V. Ramgopal Rao, G. Wijeratne, D. Chu, T. Brozek,
and C.R. Viswanathan, "Plasma Process Induced Abnormal 1/f
Noise Behavior in Deep Sub-Micron MOSFETs", 3 rd International
Symposium on Plasma Process-Induced Damage (P2ID), Hawaii, USA,
June, 1998
W.Hansch, A.Nakajima, K.Shibahara, V. Ramgopal
Rao and I.Eisele, "Observation of Periodic Current Oscillations
in Vertical sub-100nm MOS-PDBFETs with Wide Channels", 1998
IEEE Silicon Nanoelectronics workshop, (Satellite Workshop, VLSI
T.echnology Symposium) Honolulu, Hawaii, USA, June, 1998
C.R. Viswanathan and V. Ramgopal Rao, "Application
of charge pumping technique for sub-micron MOSFET characterization"
Presented at the Electrical and Physical Characterization of Materials
and Devices for Silicon Microelectronics. MIGAS, Autrans, France,
29 June -5 July 1998
A.Inani, B.Cheng, V. Ramgopal Rao, and J.C.S.Woo,
"Gate Stack Architecture Analysis in sub 100 nm Channel Length
MOSFETs" , 5 th National SRC Conference TECHCON, 1998, Las
Vegas, USA
B.Cheng, V. Ramgopal Rao, B.Ikegami, and J.C.S.Woo,
"Realization of sub 100 nm asymmetric Channel MOSFETs with
Excellent Short-Channel Performance and Reliability" Technical
Digest, 28 th European Solid-State Device Research Conference (ESSDERC),
Bordeaux, France, 1998
R.Sachdev, G.Wijeratne, V. Ramgopal Rao, and C.R.Viswanathan,
"A study of the effect of Plasma Damage on Sub-micron MOSFET's
Flicker Noise Properties", Technical Digest, 28th European
Solid-State Device Research Conference (ESSDERC), Bordeaux, France,
1998
A.Inani, V.Ramgopal Rao, B.Cheng, M.Cao, P.V.Voorde,
W.Greene, and J.C.S. Woo, "Performance Considerations in Using
High-k Dielectrics for Deep Sub-Micron MOSFETs", Proceedings
of the Solid state Devices and Materials (SSDM) Research Conference,
Hiroshima, Japan, 7-10 Sept., 1998
B. Cheng, V. Ramgopal Rao, and J. C. S. Woo, "Sub
0.18 um SOI MOSFETs Using Lateral Asymmetric Channel Profile and
Ge Pre-amorphization Salicide Technology", Proceedings of the
IEEE SOI Conference, October 5-8, Stuart, Florida, USA, 1998
W.Hansch, V.Ramgopal Rao, C.Fink, F.Kaesen, and
I.Eisele, "Electric Field Tailoring in MBE Grown Vertical Sub-100
nm MOSFETs", Thin Solid Films, vol..321, p. 206-214, 1998
T.Brozek, V. Ramgopal Rao, A.Sridharan, J. Werking,
D.Chan, and C.R.Viswanathan, "Charge Injection using Gate-Induced-Drain-Leakage
Current for Characterization of Plasma Edge Damage in CMOS Devices"
IEEE Transactions on Semiconductor Manufacturing, vol. 11 (2), May
1998
C.R. Viswanathan, and V. Ramgopal Rao "Application
of charge pumping technique for sub-micron MOSFET characterization"
Microelectronic Engineering, vol.40, (no.3-4):p. 131-46, Nov. 1998
A.Balandin, S.Cai, R.Li, K.L.Wang, V.Ramgopal
Rao, and C.R.Viswanathan, "Flicker Noise in GaN/Al0.15Ga0.85N
Doped Channel Heterostructure Field Effect Transistors", IEEE
Electron Device Letters, p. 475, Vol. 19, 1998
The Microelectronics Group, "Radiation effects
in silicon devices," Int. Conf. on Computers and Devices for
Communication, Calcutta (1998).
S. Mahapatra, C. D. Parikh and J. Vasi, "A
reliable approach to determine hot-carrier induced interface state
distribution in nMOSFETs using charge pumping," Int. Conf.
on Computers and Devices for Communication (CODEC), p. 373, Calcutta
(1998).
C.R.Viswanathan and V. Ramgopal Rao, "Plasma
Damage Studies Using SPIDER Structures", Microelectronic Innovation
and Computer Research Opportunities (MICRO), University of California,
1998
W. Hansch, V.Ramgopal Rao, and I.Eisele, "The
Planar-Doped-Barrier FET:MOSFET Overcomes Conventional Limitations",
Technical Digest, p. 624, 27 th European Solid-State Device Research
Conference (ESSDERC), Stuttgart, Germany, September, 1997
W. Hansch, F. Kaesen, V.Ramgopal Rao, and I. Eisele,
"Electric field-tailoring in MBE-grown MOSFETs", Technical
Digest, p. 117, 7th International Symposium on Silicon Molecular
Beam Epitaxy, Banff, Canada, July 1997
V. Ramgopal Rao, W. Hansch, and I. Eisele, "Simulation,
Fabrication and Characterization of High Performance Planar-Doped-Barrier
Sub 100 nm Channel MOSFETs" Technical Digest, IEEE International
Electron Devices Meeting (IEDM), p. 811, Washington DC, USA, December,
1997
Anand Sridharan, V.Ramgopal Rao, Tomasz Brozek,
J. Werking, and C.R.Viswanathan, "Charge Injection using Gate-Induced-Drain-Leakage
Current for Characterization of Plasma Edge Damage in CMOS Devices",
Technical Digest, p. 560, 27 th European Solid-State Device Research
Conference (ESSDERC), Stuttgart, Germany, September, 1997
C.R.Viswanathan, V.Ramgopal Rao and T.Brozek,
"Localized Charge Injection-A Tool to Investigate Plasma Damage
in CMOS Devices" (invited) Proceedings of the 9 th International
Conference on Physics of Semiconductor Devices, December, 1997,
New Delhi, India
V. Ramgopal Rao, W. Hansch, H. Baumgartner, I.
Eisele, D. K. Sharma and J. Vasi "Charge Trapping Behavior
in Deposited and Grown Oxides", Thin Solid Films, vol. 296,
p. 37, 1997
V. Ramgopal Rao, I. Eisele, R. M. Patrikar, D.
K. Sharma, J. Vasi, and T. Grabolla "High-Field Stressing of
LPCVD Gate Oxides", IEEE Electron Device Letters, vol.18, p.84,
1997
P. V. S. Subrahmanyam, A. Prabhakar and J. Vasi,
"High-field stressing effects on the split N2O grown thin gate
dielectrics by rapid thermal processing," IEEE Trans. Electron
Devices 44, 505 (1997).
A. Topkar, T. Mathew, R. Lal, J. Vasi and L. Nanver,
"Radiation induced degradation of bipolar transistors,"
Proc. of the 9th International Workshop on the Physics of Semiconductor
Devices, New Delhi (1997).
S. Mahapatra, C. D. Parikh and J. Vasi, "A
new technique to profile hot-carrier induced interface state generation
in nMOSFETs using charge pumping," Proc. of the 9th International
Workshop on the Physics of Semiconductor Devices, p. 1030, New Delhi
(1997).
V.Ramgopal Rao, W.Hansch, H.Baumgartner, I.Eisele,
D.K.Sharma, J.Vasi, and T.Grabolla, "Charge Trapping Behavior
in Deposited and Grown Thin MOS Gate Dielectrics", Proceedings
of the European Materials Research Society (EMRS) Symposium, 1996
Spring Meeting, Strasbourg, France
V. Ramgopal Rao, F. Wittmann, H. Gossner, and
I. Eisele, " Hysteresis Behaviour in 85 nm Channel Length Vertical
MOSFETs Grown by MBE", IEEE Trans. on Electron Devices, vol.
43(6), p. 973, 1996
V. Ramgopal Rao, D. K. Sharma, and J. Vasi, "Neutral
Electron Trap Generation under Irradiation in Reoxidised Nitrided
oxide Gate Dielectrics", IEEE Trans. on Electron Devices, vol.
43, p. 1467, 1996
V. Ramgopal Rao, I. Eisele, and T. Grabolla, "Alternative
Gate Insulators for Future Deep Submicron Channel Length MOSFETs",
Proc. of VIII International Conference on Physics of Semiconductor
Devices, December, 1995, New Delhi, India
N. Arthi, C.Kaivalya, and V.Ramgopal Rao, "Computers
in Medicine" CSI Communications, vol. 17, p.5, 1993 R. M. Patrikar,
R. Lal and J. Vasi, "Interface-state generation due to high-field
stressing in MOS oxides," Solid State Electronics. 38, 477
(1995).
S. S. Moharir, J. Vasi and A.N. Chandorkar, "Data
and Modelling of HCl Oxidation of Silicon," Journal of the
Institution of Engineering (India) 76, 2 (1995).
A.Mallik, A.N.Chandorkar and J. Vasi, "Capture
cross-section of hole traps in reoxidized nitrided oxide measured
by irradiation," Solid-State Electronics 38, 1851 (1995).
A. Mallik, V. Ramgopal Rao, A.N. Chandorkar, and
J. Vasi, "Trap generation upon irradiation in reoxidised nitrided
oxide gate dielectrics", Proc. of VII International conference
on Physics of Semiconductor Devices, December, 1993 New Delhi, India
Mallik, A.N. Chandorkar and J. Vasi, "Electron
trapping during irradiation in RNO," 30th IEEE Nuclear and
Space Radiation Effects Conference, Snowbird, USA (1993).
R. M. Patrikar, R. Lal and J. Vasi, "Power
Law Model for Positive Charge Buildup in Silicon Dioxide due to
High Field Stressing," Solid State Electronics, 36, 723 (1993).
R. M. Patrikar, R. Lal and J. Vasi, "Degradation
of Oxides in MOS Capacitors Under High Field Stress," J. Appl.
Phys. 74, 4598 (1993).
R. M. Patrikar, R. Lal and J. Vasi, "Net
Positive Charge Buildup in Various MOS Insulators Due to High-Field
Stressing" IEEE Electron Device Lett. 14, 530 (1993).
R. M. Patrikar, R. Lal, J. Vasi, "High Field
Stressing characteristics for the case of silicon in Inversion,"
J.Appl.Phys., 73, 3857 (1993).
A. Mallik, J. Vasi and A. N. Chandorkar, "A
Study of Radiation Effects on Reoxidized Nitrided Oxide MOSFETs,
Including Effects on Mobility," Solid-State Electron. 36, 1359
(1993).
A. Mallik, J. Vasi and A. N. Chandorkar, "Electron
Trapping During Irradiation in Reoxidized Nitided Oxide," IEEE
Trans. Nucl. Sci. NS-40, 1380 (1993).
A.Mallik, J.Vasi and A.N.Chandorkar, "The
nature of the hole traps in reoxidized nitrided oxide gate dielectrics,"
J.Appl.Phys. 74, 2665 (1993).
M.H.M. Reddy and D.K. Sharma, "Optimization
of growth conditions of dry thermal oxides for radiation hard applications,"
Proc. of the Seventh International Workshop on the Physics of Semiconductor
Devices, New Delhi, India, NewDelhi(1993).
S. S. Moharir and R. Lal, "Radiation performance
of reoxidized nitrided pyrogenic oxide as a field dielectric,"
Proc. of the Seventh International Workshop on the Physics of Semiconductor
Devices, New Delhi, India, New Delhi (1993).
A.Mallik, J. Vasi and A.N. Chandorkar, "Hole
traps in RNO gate dielectrics," Proc. of the Seventh International
Workshop on the Physics of Semiconductor Devices, New Delhi (1993). |
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