摘要
Halide perovskites show excellent photovoltaic properties[1−4].However,the preparation of high-quality perovskite crystals remains a great challenge,which limits their applications.Perovskite materials applied to photodetectors mainly include polycrystalline thin films and single crystals.Traditional solution methods are used to prepare polycrystalline thin films,and the films are full of defects such as voids and grain boundaries[5−7].Compared to polycrystalline thin films,perovskite single crystals possess high crystallinity and low defect density[8−10].Photodetectors based on perovskite single crystals exhibit excellent performance[11].However,the size limitation of single crystals hinders their application in photodetectors[12].
基金
supported by the National Natural Science Foundation of China(62004058 and U21A2076)
Natural Science Foundation of Hebei Province(F2020202022)
State Key Laboratory of Reliability and Intelligence of Electrical Equipment(EERI_PI20200005)
S&T Program of Hebei(215676146H and 225676163GH)
Hebei Graduate Innovation Funding Project(CXZZBS2023037 and CXZZSS2023026)
L.Ding thanks the National Key Research and Development Program of China(2022YFB3803300)
the open research fund of Songshan Lake Materials Laboratory(2021SLABFK02)
the National Natural Science Foundation of China(21961160720).
