Model and analysis of drain induced barrier lowering effect for 4H--SiC metal semiconductor field effect transistor
Cao Quan-Jun(曹全君)a)†, Zhang Yi-Men(张义门)b), and Jia Li-Xin(贾立新)a)
a Institute of Electronic Science and Technology, College of Information Engineering, Zhejiang University of Technology, Hangzhou 310014, China; b School of Microelectronics, Xidian University, Xi'an 710071, China
Abstract Based on an analytical solution of the two-dimensional Poisson equation in the subthreshold region, this paper investigates the behavior of DIBL (drain induced barrier lowering) effect for short channel 4H--SiC metal semiconductor field effect transistors (MESFETs). An accurate analytical model of threshold voltage shift for the asymmetric short channel 4H--SiC MESFET is presented and thus verified. According to the presented model, it analyses the threshold voltage for short channel device on the L/a (channel length/channel depth) ratio, drain applied voltage VDS and channel doping concentration ND, thus providing a good basis for the design and modelling of short channel 4H--SiC MESFETs device.
Received: 21 December 2008
Revised: 13 March 2009
Accepted manuscript online:
(Semiconductor-device characterization, design, and modeling)
Fund: Project partly supported by
National Defense Basic Research Program of China (Grant No
51327010101).
Cite this article:
Cao Quan-Jun(曹全君), Zhang Yi-Men(张义门), and Jia Li-Xin(贾立新) Model and analysis of drain induced barrier lowering effect for 4H--SiC metal semiconductor field effect transistor 2009 Chin. Phys. B 18 4456
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.