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Gate tunable photoresponse of a two-dimensional p-n junction for high performance broadband photodetector

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Title
Gate tunable photoresponse of a two-dimensional p-n junction for high performance broadband photodetector
Author(s)
Tran, Thi Uyen; Nguyen, Duc Anh; Duong, Ngoc Thanh; Park, Dae Young; Nguyen, Duc Hieu; Nguyen, Phuong Huyen; Park, Chulho; Lee, Juchan; Byung Wook Ahn; Im, Hyunsik; Lim, Seong Chu; Jeong, Mun Seok
Publication Date
2022-03-01
Journal
Applied Materials Today, v.26
Publisher
Elsevier Ltd
Abstract
© 2021 Elsevier Ltd. Optoelectronic devices based on two-dimensional (2D) van der Waals (vdWs) materials and their heterostructures are promising owing to their intriguing properties. However, the achievement of high-performance photodetectors over a wide detection range is still limited. In particular, detection in the near-infrared (NIR) region has not been attained successfully because of the relatively low responsivity to date. Herein, we report an efficient photodetection from visible to NIR ranges using a ReS2/Te vdWs heterostructure. The dependence of the photocurrent on the incident power reveals that the dominant operating mechanism can be switched between the photogating effect and photoconductive effect by applying the back-gate voltage. The ReS2/Te photodetector exhibits remarkable responsivities of 3 × 106 A W‒1 at 458 nm and 1 × 106 A W‒1 at 1062 nm laser irradiations, and an ultrahigh photoconductive gain (up to ∼108) resulting from the strong photogating effect. These outstanding performances demonstrate that the ReS2/Te vdWs heterostructure is suitable for high-performance broadband photodetectors in practical applications.
URI
https://pr.ibs.re.kr/handle/8788114/10975
DOI
10.1016/j.apmt.2021.101285
ISSN
2352-9407
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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