Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Uppili S. Raghunathan"'
Autor:
Alvin Joseph, Vibhor Jain, John Pekarik, Ajay Raman, Shafi Syed, Liu Hang, Ned Cahoon, Randy Wolf, Venkat Vanukuru, Elan Veeramani, Beng Woon Lim, Uppili S. Raghunathan, Qizhi Liu, Yves Ngu
Publikováno v:
2022 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS).
Publikováno v:
IEEE Transactions on Electron Devices. 68:987-993
This investigation examines the physical mechanisms that can increase the variability of both p-n junctions and silicon–germanium heterojunction bipolar transistors (SiGe HBTs) at cryogenic temperatures. The important operative mechanisms responsib
Autor:
Jeffrey B. Johnson, Dongmo Pernell, Uppili S. Raghunathan, Rajendran Krishnasamy, Henry Lee Aldridge, John J. Pekarik, Vibhor Jain, Mishra Rahul
Publikováno v:
ECS Transactions. 98:127-134
Process sensitivity and variation, such as layer thicknesses, etch dimensions and doping levels are all process parameters that should be well understood when assessing their impact on end of process wafer quality and device performance. Improvements
Autor:
Dimitris P. Ioannou, Uppili S. Raghunathan, Dave Brochu, Adam Divergilio, Vibhor Jain, John J. Pekarik
Publikováno v:
2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS).
Autor:
Ajay Raman, Vibhor Jain, Elanchezhian Veeramani, Beng Woon Lim, Uppili S. Raghunathan, Yves Ngu, Alvin Joseph
Publikováno v:
2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS).
Autor:
Nelson E. Lourenco, Anup P. Omprakash, Martin Mourigal, Jason Dark, John D. Cressler, Zachary E. Fleetwood, L. Ge, Dragomir Davidovic, Brian R. Wier, Hanbin Ying, Uppili S. Raghunathan
Publikováno v:
IEEE Transactions on Electron Devices. 65:3697-3703
This paper provides insight into the transport mechanisms of the collector current in SiGe HBTs operating at cryogenic temperatures and compares three technology generations of devices. Based on the experimental data, a method to differentiate direct
Autor:
John D. Cressler, Anup P. Omprakash, Hanbin Ying, Uppili S. Raghunathan, Tikurete G. Bantu, Hiroshi Yasuda, Brian R. Wier, Philipp Menz, Rafael Perez Martinez
Publikováno v:
IEEE Transactions on Electron Devices. 65:2430-2438
We investigate high current stress mechanisms and demonstrate how Auger hot carriers can damage both oxide interfaces and polysilicon regions of the emitter and base. A new current gain enhancement (CGE) effect is proposed, which involves hot-carrier
Autor:
Michael A. Oakley, John D. Cressler, Alvin J. Joseph, Zachary E. Fleetwood, Vibhor Jain, Brian R. Wier, Uppili S. Raghunathan
Publikováno v:
IEEE Transactions on Electron Devices. 65:793-797
The implementation of a “superjunction” collector design in a silicon–germanium heterojunction bipolar transistor technology is explored for enhancing breakdown performance. The superjunction collector is formed via the placement of a series of
Autor:
Ickhyun Song, Vibhor Jain, Jeffrey H. Warner, Brian R. Wier, Dale McMorrow, Ani Khachatrian, Uppili S. Raghunathan, George N. Tzintzarov, Zachary E. Fleetwood, Moon-Kyu Cho, En Xia Zhang, Harold L. Hughes, Pauline Paki, Adrian Ildefonso, John D. Cressler, P.J. McMarr, Alvin J. Joseph, Mason T. Wachter, Delgermaa Nergui
Publikováno v:
IEEE Transactions on Nuclear Science. 65:399-406
The doping profile of silicon-germanium heterojunction bipolar transistors (SiGe HBTs) is modified to enhance inverse-mode (IM) device operation. Device improvements are presented in this paper, along with the impact the alterations have on the radia
Autor:
Partha S. Chakraborty, Rajarshi Mukhopadhyay, John D. Cressler, Anup P. Omprakash, Jeffrey A. Babcock, Ha Dao, Uppili S. Raghunathan, Hanbin Ying
Publikováno v:
IEEE Transactions on Electron Devices. 64:3748-3755
Safe-operating-area (SOA) in a high-voltage complementary silicon–germanium (SiGe) (= n-p-n + p-n-p) on silicon-on-insulator (SOI) technology is investigated from 24 °C to 300 °C. Three key reliability degradation regions are identified, includin