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Enhanced Photodetection Range from Visible to Shortwave Infrared Light by ReSe₂/MoTe₂ van der Waals Heterostructure.

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.

SUBMITTER: Lin Z

PROVIDER: S-EPMC9370303 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature

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Enhanced Photodetection Range from Visible to Shortwave Infrared Light by ReSe2/MoTe2 van der Waals Heterostructure.

Lin Zhitao Z Zhu Wenbiao W Zeng Yonghong Y Shu Yiqing Y Hu Haiguo H Chen Weicheng W Li Jianqing J

Nanomaterials (Basel, Switzerland) 20220803 15

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 respon ...[more]

PMID: 35957096

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