期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 48, 期 7, 页码 1326-1332出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/16.930647
关键词
heterojunction; HgCdTe photodiodes; homojunction; quantum efficiency; R(0)A product
In this paper, the performance of P-on-n double-layer hetrojunction (DLHJ) HgCdTe photodiodes at temperature 77 K is analyzed theoretically, Calculation has been performed for the backside-illuminated configuration. The effect of photodiode base layer geometry on quantum efficiency and R-0 A product is analyzed. Also, the effect of lateral collection of diffusion current and photocurrent on photodiode parameters has been shown. Moreover the dependence of the p-n junction position within heterostructure on the band-gap energy profiles and photodiode performance is presented. Finally, the influence of the composition gradient and p-side doping concentration on photodiode parameters is described briefly.
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