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    Laser-Assisted Synthesis of Ag 2 S-Quantum-Dot-in-Perovskite Matrix and Its Application in Broadband Photodetectors

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    Type
    Article
    Authors
    Zhao, Chen
    Chen, Cailing cc
    Wei, Ran
    Zou, Yuting
    Kong, Wenchi
    Huang, Tao
    Yu, Zhi
    Yang, Jianjun
    Li, Feng
    Han, Yu cc
    Guo, Chunlei
    Yu, Weili cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    Date
    2021-10-29
    Online Publication Date
    2021-10-29
    Print Publication Date
    2022-01
    Embargo End Date
    2022-10-29
    Submitted Date
    2021-07-27
    Permanent link to this record
    http://hdl.handle.net/10754/672994
    
    Metadata
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    Abstract
    Halide perovskites are widely explored as efficient photoresponsive materials for optoelectronic devices. However, understanding and controlling their underlying optical and electrical properties remains limited. Here, a novel approach is developed by introducing silver sulfide (Ag2S) quantum dots (QDs) into an MAPbBr3 single crystal. The high-quality Ag2S-quantum-dot-in-perovskite (Ag2S-QDiP) matrixes synthesized through a laser-assisted inverse temperature crystallization (LA-ITC) strategy show broadband light-sensitive wavelength from 550 to over 1000 nm, and a balanced carriers mobility facilitates their transmission and collection. A Ag2S-QDiP-enabled photodetector is demonstrated, which exhibits considerably enhanced responsivity and detectivity of 1.17 A W−1 and 6.24 × 1014 Jones at 532 nm, and 57.69 mA W−1 and 1.03 × 1011 Jones at 1064 nm, respectively. The enhanced performance in the near-infrared (NIR) region can be attributed to the discrete heterojunction formed between MAPbBr3 and Ag2S QDs, which enhances the light absorption in the NIR range and facilitates photogenerated excitons’ separation at the interface. The facile synthesis process, the more balanced transport behavior, and the ensuing improved device performance highlight introducing QDs into perovskite single crystal as an efficient strategy for tuning fundamental properties of perovskite and for developing high-efficiency broadband electronic and optoelectronic devices.
    Citation
    Zhao, C., Chen, C., Wei, R., Zou, Y., Kong, W., Huang, T., … Yu, W. (2021). Laser-Assisted Synthesis of Ag 2 S-Quantum-Dot-in-Perovskite Matrix and Its Application in Broadband Photodetectors. Advanced Optical Materials, 2101535. doi:10.1002/adom.202101535
    Sponsors
    This work was supported by the National Key Research and Development Program of China (Program No. 2018YFB1107202), the National Natural Science Foundation of China (Grant Nos. NSFC 61774155, 91750205, and 61705227), and the K. C. Wong Education Foundation (Grant No. GJTD-2018-08).
    Publisher
    Wiley
    Journal
    Advanced Optical Materials
    DOI
    10.1002/adom.202101535
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/adom.202101535
    ae974a485f413a2113503eed53cd6c53
    10.1002/adom.202101535
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Science Program

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