Ultra-Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

Xu Li; Chang Liu; Feng DingZheyi LuPeng GaoZiwei HuangWeiqi DangLiqiang ZhangXiaohui LinShuimei DingBailing LiYing HuangfuXiaohua ShenBo LiXuming ZouYuan LiuLei LiaoYiliu WangXidong Duan

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Ultra-Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

机译：Ultra-Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

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The detection of ultraviolet (UV) radiation with effective performance androbust stability is essential to practical applications. Metal halide singlecrystalperovskites (ABX_3) are promising next-generation materials for UVdetection. The device performance of all-inorganic CsPbCl_3 photodetectors(PDs) is still limited by inner imperfection of crystals grown in solution.Here wafer-scale single-crystal CsPbCl_3 thin films are successfully grownby vapor-phase epitaxy method, and the as-constructed PDs under UV lightillumination exhibit an ultralow dark current of 7.18 pA, ultrahigh ON/OFFratio of ≈5.22 × 10~5, competitive responsivity of 32.8 A W~(?1), external quantumefficiency of 10867% and specific detectivity of 4.22 × 10~(12) Jones. More importantly,they feature superb long-term stability toward moisture and oxygenwithin twenty-one months, good temperature tolerances at low and hightemperatures. The ability of the photodetector arrays for excellent UV lightimaging is further demonstrated.

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《Advanced functional materials》 |2023年第15期|2213360.1-2213360.12|共12页
作者
Xu Li; Chang Liu; Feng DingZheyi LuPeng GaoZiwei HuangWeiqi DangLiqiang ZhangXiaohui LinShuimei DingBailing LiYing HuangfuXiaohua ShenBo LiXuming ZouYuan LiuLei LiaoYiliu WangXidong Duan;
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作者单位

College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082, P. R. China;

School of Physics and ElectronicsHunan UniversityChangsha 410082, P. R. China;

Institute of SemiconductorsSouth China Normal UniversityGuangzhou 510631, P. R. China;

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all-inorganic metal halide perovskites; monocrystalline CsPbCl_3 thin films; ultraviolet imaging sensing; ultraviolet photodetectors; vaporphase epitaxy;

Ultra-Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

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