Air-Stable and Self-Driven Perovskite Photodiodes with High On/Off Ratio and Swift Photoresponse.
作者： Yajie Yan , Qingqing Wu , Yuhang Zhao , Shoumian Chen , Shaojian Hu
关键词:
摘要: Recent years have witnessed rapid developments in organic-inorganic hybrid perovskites, among which 2D Ruddlesden-Popper (RP) perovskites stand out due to their outstanding ambient stability. In photodetector applications, RP are mostly limited lateral device configuration because of preferred in-plane charge transportation within quantum well structures. this work, the low-temperature solution construction perovskite-based photodiodes vertical architecture is demonstrated. The paradigm phenylethylamine (PEA) spacer cation-based fabricated and optimized by exploiting a combination NH4 Cl additive dimethyl sulfoxide solvent (DMSO) solvent. They show increased crystallinity, extended photoluminescence lifetimes, importantly generation 3D phases embedded efficiently promotes transfer. As result, photodetectors exhibit high on/off ratio up 2 × 104 , large photocurrent 0.34 mA cm-2 rise (5.8 ms) decay time (4.6 ms). Of critical importance film/device stabilities demonstrated storage air (at 25 °C with 60% relative humidity) for 15 days as under UV illumination 1.5 h after 1500 bending cycles on flexible substrate.
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