학술논문
Enhanced Photodetection Range from Visible to Shortwave Infrared Light by ReSe 2 /MoTe 2 van der Waals Heterostructure.
Document Type
Article
Author
Source
Subject
*SCHOTTKY barrier
*PHOTODETECTORS
*HETEROJUNCTIONS
*MOLYBDENUM
*RHENIUM
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Language
ISSN
2079-4991
Abstract
Type II vertical heterojunction is a good solution for long-wavelength light detection. Here, we report a rhenium selenide/molybdenum telluride (n-ReSe2/p-MoTe2) photodetector for high-performance photodetection in the broadband spectral range of 405–2000 nm. Due to the low Schottky barrier contact of the ReSe2/MoTe2 heterojunction, the rectification ratio (RR) of ~102 at ±5 V is realized. Besides, the photodetector can obtain maximum responsivity (R = 1.05 A/W) and specific detectivity (D* = 6.66 × 1011 Jones) under the illumination of 655 nm incident light. When the incident wavelength is 1550–2000 nm, a photocurrent is generated due to the interlayer transition of carriers. This compact system can provide an opportunity to realize broadband infrared photodetection. [ABSTRACT FROM AUTHOR]