New Silicon Carbide (SiC) Hetero-Junction Darlington Transistor

Details New Silicon Carbide (SiC) Hetero-Junction Darlington Transistor New Silicon Carbide (SiC) Hetero-Junction Darlington Transistor

2010-08-18

arxiv.org/abs/1008.3023v1

Proceedings of the IEEE INDICON, pp.1-3, 15-17 September 2006, New Delhi, India

Physics

Condensed Matter

Materials Science

http://web.iitd.ac.in/~mamidala/

Scientific paper

Basic SiC bipolar transistors have been studied in the past for their applications where high power or high temperature operation is required. However since the current gain in SiC bipolar transistors is very low and therefore, a large base drive is required in high current applications. Therefore, it is important to enhance the current gain of SiC bipolar transistors. Using two dimensional mixed mode device and circuit simulation, for the first time, we report a new Darlington transistor formed using two polytypes 3C-SiC and 4H-SiC having a very high current gain as a result of the heterojunction formation between the emitter and the base of transistor. The reasons for the improved performance are analyzed.

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