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  • Received: Apr. 13, 2020

    Accepted: Jun. 10, 2020

    Posted: Jun. 12, 2020

    Published Online: Jul. 14, 2020

    The Author Email: Yating Zhang (yating@tju.edu.cn)

    DOI: 10.1364/PRJ.395090

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    Yifan Li, Yating Zhang, Zhiliang Chen, Qingyan Li, Tengteng Li, Mengyao Li, Hongliang Zhao, Quan Sheng, Wei Shi, Jianquan Yao. Self-powered, flexible, and ultrabroadband ultraviolet-terahertz photodetector based on a laser-reduced graphene oxide/CsPbBr3 composite[J]. Photonics Research, 2020, 8(8): 08001301

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Photonics Research, Vol. 8, Issue 8, 08001301 (2020)

Self-powered, flexible, and ultrabroadband ultraviolet-terahertz photodetector based on a laser-reduced graphene oxide/CsPbBr3 composite

Yifan Li1, Yating Zhang1,*, Zhiliang Chen1, Qingyan Li1, Tengteng Li1, Mengyao Li1, Hongliang Zhao1, Quan Sheng1, Wei Shi1, and Jianquan Yao1,2

Author Affiliations

  • 1Key Laboratory of Optoelectronics Information Technology (Tianjin University), Ministry of Education, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
  • 2e-mail: jqyao@tju.edu.cn

Abstract

Self-powered and flexible ultrabroadband photodetectors (PDs) are desirable in a wide range of applications. The current PDs based on the photothermoelectric (PTE) effect have realized broadband photodetection. However, most of them express low photoresponse and lack of flexibility. In this work, high-performance, self-powered, and flexible PTE PDs based on laser-scribed reduced graphene oxide (LSG)/CsPbBr3 are developed. The comparison experiment with LSG PD and fundamental electric properties show that the LSG/CsPbBr3 device exhibits enhanced ultrabroadband photodetection performance covering ultraviolet to terahertz range with high photoresponsivity of 100 mA/W for 405 nm and 10 mA/W for 118 μm at zero bias voltage, respectively. A response time of 18 ms and flexible experiment are also acquired at room temperature. Moreover, the PTE effect is fully discussed in the LSG/CsPbBr3 device. This work demonstrates that LSG/CsPbBr3 is a promising candidate for the construction of high-performance, flexible, and self-powered ultrabroadband PDs at room temperature.

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