Open AccessUni-traveling-carrier double heterojunction phototransistor photodetector
Author(s) -
Huo Wen-Juan,
Hongyun Xie,
Song Liu,
Wanrong Zhang,
ZhiYun Jiang,
Xiang Chen,
Lei Dong
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.228501
Subject(s) - photodiode , responsivity , photodetector , optoelectronics , heterojunction , materials science , detector , optics , photoresistor , physics
An InP/InGaAsP uni-traveling-carrier double heterojunction phototransistor (UTC-DHPT) photodetector is simulated and analyzed in a two-dimensional (2D) model utilizing a numerical device simulator (Atlas). The effects of device structure parameters on operational performance, such as responsivity and characteristic frequency, are studied in detail. Simulation results indicate that the UTC-DHPT can ease the contradiction between detection efficiency and working speed, which exists in traditional heterojun-ction phototransistor and achieve both high responsivity (≥17.93 A/W) and high characteristic frequency (≥121.68 GHz) simultaneously.