TY - JOUR
T1 - Self-Powered Broadband Schottky Junction Photodetector Based on a Single Selenium Microrod
AU - Chang, Yu
AU - Chen, Liang
AU - Wang, Jianyuan
AU - Tian, Wei
AU - Zhai, Wei
AU - Wei, Bingbo
N1 - Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/5/5
Y1 - 2019/5/5
N2 - The design of self-powered photodetectors that can operate under harsh conditions attracts widespread research attention, because of their potential applications in space exploration and environmental monitoring. Herein, we report a convenient approach to fabricate Se microrods and subsequently to develop self-powered Schottky junction photodetectors by depositing liquid In-Ga alloy on one side of a single Se microrod. The low dark current (200 fA), high responsivity (408 mA/W), strong detectivity (1.30 × 1013 Jones), and ultra-short response/decay time (124/146 μs) are achieved for this Se microrod-based photodetector. A binary response phenomenon, that is, the detected current alternates between the positive and negative state when the light is switched on and off, is observed at a low reverse bias. More interestingly, the device exhibits a stable and quick photoresponse even at an operating temperature as low as 100 K, demonstrating its promising utilization in space exploration.
AB - The design of self-powered photodetectors that can operate under harsh conditions attracts widespread research attention, because of their potential applications in space exploration and environmental monitoring. Herein, we report a convenient approach to fabricate Se microrods and subsequently to develop self-powered Schottky junction photodetectors by depositing liquid In-Ga alloy on one side of a single Se microrod. The low dark current (200 fA), high responsivity (408 mA/W), strong detectivity (1.30 × 1013 Jones), and ultra-short response/decay time (124/146 μs) are achieved for this Se microrod-based photodetector. A binary response phenomenon, that is, the detected current alternates between the positive and negative state when the light is switched on and off, is observed at a low reverse bias. More interestingly, the device exhibits a stable and quick photoresponse even at an operating temperature as low as 100 K, demonstrating its promising utilization in space exploration.
UR - http://www.scopus.com/inward/record.url?scp=85072016169&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.9b04260
DO - 10.1021/acs.jpcc.9b04260
M3 - 文章
AN - SCOPUS:85072016169
SN - 1932-7447
VL - 123
SP - 21244
EP - 21251
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 34
ER -