The present work aims to incorporate the benefits of asymmetric hetero-dielectric engineering into the already popular dual-material double-gate tunnel field-effect transistor. Here, Poisson’s equation in 2D, incorporating appropriate boundary conditions, is solved to obtain the surface potential variation along the channel while considering Young’s popular parabolic approximation technique. From the potential profile, the electric field is derived, and the drain current expression is then extracted analytically, integrating the band-to-band tunneling generation rate over the tunneling region using Kane’s model. The dependence of surface potential, electric field, and tunneling current on the device parameters is analyzed by varying the biasing voltages, gate oxide thickness, body thickness, and gate metal work function, demonstrating agreement with TCAD simulation results. The performance of the device is compared with the earlier-reported structure of the dual-material gate hetero-dielectric TFET on the basis of channel potential, electric field, and drain current. The proposed device exhibits higher ON-state current, better ON–OFF current ratio, and suppressed short-channel effects. The results also demonstrate the superiority of the graded dielectric over the single-dielectric and hetero-dielectric double-gate TFET.
Journal of Computational Electronics – Springer Journals
Published: Nov 8, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera