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Graphene quantum dot-embedded perovskite photodetectors with fast response and enhanced sensitivity through bulk defect passivation
Journal of Industrial and Engineering Chemistry ( IF 6.1 ) Pub Date : 2021-05-07 , DOI: 10.1016/j.jiec.2021.05.001
David Sunghwan Lee , Jeong-Seob Yun , Jin Hyuck Heo , Bong Woo Kim , Sang Hyuk Im

Graphene quantum dots (GQDs) synthesized by single phase solution chemistry are embedded in metal halide perovskite (MHP) films because they can act as passivating defects that are present throughout the MHP film, not only at the interface but also throughout the bulk of the film. The perovskite photodetectors composed of indium-doped tin oxide/SnO2/MHP with embedded GQDs/poly triarylamine/Au have the reduced dark current, increased detectivity, and fasted response speed due to lower trap density throughout the bulk MHP layer.



中文翻译:

石墨烯量子点嵌入钙钛矿光电探测器具有快速响应和通过体缺陷钝化增强的灵敏度

通过单相溶液化学合成的石墨烯量子点 (GQD) 嵌入金属卤化物钙钛矿 (MHP) 薄膜中,因为它们可以充当存在于整个 MHP 薄膜中的钝化缺陷,不仅存在于界面处,还存在于整个薄膜中. 由掺铟氧化锡/SnO 2 /MHP 和嵌入 GQD/聚三芳基胺/Au组成的钙钛矿光电探测器由于整个 MHP 层的陷阱密度较低,因此具有降低的暗电流、提高的探测率和快速的响应速度。

更新日期:2021-06-23
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