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A General Strategy for Ordered Carrier Transport of Quasi‑2D and 3D Perovskite Films for Giant Self‑Powered Photoresponse and Ultrahigh Stability

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Nano-Micro Letters 2023年第8期15卷 128-140页

作者： Fei Zhu Gang Lian Deliang Cui Qilong Wang Haohai Yu Huaijin Zhang Qingbo Meng Ching‑Ping Wong State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100People’s Republic of China Key Laboratory for Special Functional Aggregated Materials of Education Ministry School of Chemistry&Chemical EngineeringShandong UniversityJinan 250100People’s Republic of China Key Laboratory for Renewable Energy Chinese Academy of Sciences(CAS)BeijingPeople’s Republic of China Key Laboratory for New Energy Materials and Devices Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsCASBeijing 100190People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Organic–inorganic hybrid perovskite materials have been focusing more attention in the field of self-powered photodetectors due to their superb photoelectric ***,a universal growth approach is required and challenging to realize vertically oriented growth and grain boundary fusion of 2D and 3D perovskite grains to promote ordered carrier transport,which determines superior photoresponse and high ***,a general thermal-pressed(TP)strategy is designed to solve the above issues,achieving uniaxial orientation and single-grain penetration along the film thickness *** constructs the efficient channel for ordered carrier transport between two *** of the improved crystal quality and lower trap-state density,the quasi-2D and 3D perovskite-based self-powered photodetector devices(with/without hole transport layer)all exhibit giant and stable photoresponse in a wide spectrum range and specific wavelength *** the MAPbI_(3)-based self-powered photodetectors,the largest R_(λ) value is as high as 0.57 A W^(−1)at 760 nm,which is larger than most reported ***,under laser illumination(532 nm),the FPEA_(2)MA_(4)Pb_(5)I_(16)-based device exhibits a high responsivity(0.4 A W^(−1)) value,which is one of the best results in 2DRP self-powered *** addition,fast response,ultralow detection limit,and markedly improved humidity,optical and heat stabilities are clearly demonstrated for these TP-based devices.

关键词： Perovskites Thermal-pressed strategy uniaxial orientation Self-powered photodetectors Stability

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