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Self‐Powered, Flexible, and Solution‐Processable Perovskite Photodetector Based on Low‐Cost Carbon Cloth
Author(s) -
Sun Haoxuan,
Lei Tianyu,
Tian Wei,
Cao Fengren,
Xiong Jie,
Li Liang
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201701042
Subject(s) - materials science , photodetector , responsivity , optoelectronics , perovskite (structure) , indium tin oxide , substrate (aquarium) , electrode , bending , carbon fibers , ultraviolet , nanotechnology , thin film , composite material , chemical engineering , composite number , oceanography , chemistry , geology , engineering
Flexible perovskite photodetectors are usually constructed on indium‐tin‐oxide‐coated polymer substrates, which are expensive, fragile, and not resistant to high temperature. Herein, for the first time, a high‐performance flexible perovskite photodetector is fabricated based on low‐cost carbon cloth via a facile solution processable strategy. In this device, perovskite microcrystal and Spiro‐OMeTAD (hole transporting material) blended film act as active materials for light detection, and carbon cloth serves as both a flexible substrate and a conductive electrode. The as‐fabricated photodetector shows a broad spectrum response from ultraviolet to near‐infrared light, high responsivity, fast response speed, long‐term stability, and self‐powered capability. Flexible devices show negligible degradation after several tens of bending cycles and at the extremely bending angle of 180°. This work promises a new technique to construct flexible, high‐performance photodetectors with low cost and self‐powered capability.