A STUDY OF CURRENT TRANSPORT IN P-N-HETEROJUNCTIONS

被引:13
作者
CHEN, SC
SU, YK
LEE, CZ
机构
[1] Department of Electrical Engineering, National Cheng Kung University, Tainan
关键词
D O I
10.1016/0038-1101(92)90166-A
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Current transport in abrupt and graded p-N heterojunction diodes is studied by employing the thermionic field-diffusion model. The tunneling effect in p-N heterojunctions is treated with a numerical solution of Schrodinger's equation. We have demonstrated that the resonant tunneling effect exists in p-N heterojunctions. For comparison, different models are applied to simulate the I-V characteristics of three different p-N heterostructures. Good design of an inserted layer between the p- and N-layers is required to obtain high injection efficiency. For the AlGaAs/GaAs system, graded heterojunctions with W(g) > 100 angstrom and abrupt heterojunctions with setback layers with W(i) > 50 angstrom increase the injection efficiency in accordance with the theoretical calculations.
引用
收藏
页码:1311 / 1323
页数:13
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