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Self-Powered Photodetector with High Efficiency and Polarization Sensitivity Enabled by WSe2/Ta2NiSe5/WSe2 van der Waals Dual Heterojunction.
Zheng, Tao; Yang, Mengmeng; Pan, Yuan; Zheng, Zhaoqiang; Sun, Yiming; Li, Ling; Huo, Nengjie; Luo, Dongxiang; Gao, Wei; Li, Jingbo.
Afiliación
  • Zheng T; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Yang M; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Pan Y; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Zheng Z; College of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. China.
  • Sun Y; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Li L; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Huo N; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Luo D; Huangpu Hydrogen Innovation Center/Guangzhou Key Laboratory for Clean Energy and Materials, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
  • Gao W; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
  • Li J; Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, P. R. China.
ACS Appl Mater Interfaces ; 15(24): 29363-29374, 2023 Jun 21.
Article en En | MEDLINE | ID: mdl-37294943
Self-powered photodetectors have triggered widespread attention because of the requirement of Internet of Things (IoT) application and low power consumption. However, it is challenging to simultaneously implement miniaturization, high quantum efficiency, and multifunctionalization. Here, we report a high-efficiency and polarization-sensitive photodetector enabled by two-dimensional (2D) WSe2/Ta2NiSe5/WSe2 van der Waals (vdW) dual heterojunctions (DHJ) along with a sandwich-like electrode pair. On account of enhanced light collection efficiency and two opposite built-in electric fields at the hetero-interfaces, the DHJ device achieves not only a broadband spectral response of 400-1550 nm but outstanding performance under 635 nm light illumination including an ultrahigh external quantum efficiency (EQE) of 85.5%, a pronounced power conversion efficiency (PCE) of 1.9%, and a fast response speed of 420/640 µs, which is much better than that of the WSe2/Ta2NiSe5 single heterojunction (SHJ). Significantly, based on the strong in-plane anisotropy of 2D Ta2NiSe5 nanosheets, the DHJ device shows competitive polarization sensitivities of 13.9 and 14.8 under 635 and 808 nm light, respectively. Furthermore, an excellent self-powered visible imaging capability based on the DHJ device is demonstrated. These results pave a promising platform for realizing self-powered photodetectors with high performance and multifunctionality.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article