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Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles
Author(s) -
Yang Bingxiao,
Wang Yangbo,
Wei Tian,
Pan Yue,
Zhou Enlong,
Yuan Ze,
Han Yingdong,
Li Mengxue,
Ling Xincan,
Yin Lisha,
Xie Xiaoji,
Huang Ling
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201801782
Subject(s) - materials science , photon upconversion , photocurrent , optoelectronics , nanoparticle , nanowire , halide , absorption (acoustics) , band gap , infrared , perovskite (structure) , lanthanide , composite number , near infrared spectroscopy , doping , nanotechnology , ion , chemical engineering , optics , composite material , inorganic chemistry , chemistry , physics , engineering , quantum mechanics
Abstract Organolead halide perovskites (OHPs) have shown unprecedented potentials in optoelectronics. However, the inherent large bandgap has restrained its working wavelength within 280–800 nm, while light at other regions, e.g., near‐infrared (NIR), may cause drastic thermal heating effect that goes against the duration of OHP devices, if not properly exploited. Herein, a solution processable and large‐scale synthesis of multifunctional OHP composites containing lanthanide‐doped upconversion nanoparticles (UCNPs) is reported. Upon NIR illumination, the upconverted photons from UCNPs at 520–550 nm can be efficiently absorbed by closely surrounded OHP nanowires (NWs) and photocurrent is subsequently generated. The narrow full width at half maximum of the absorption of rare earth ions (Yb 3+ and Er 3+ ) has ensured high‐selective NIR response. Lifetime characterizations have suggested that Förster resonance energy transfer with an efficiency of 28.5% should be responsible for the direct energy transfer from UCNPs to OHP NWs. The fabricated proof‐of‐concept device has showcased perfect response to NIR light at 980 and 1532 nm, which has paved new avenues for applications of such composites in remote control, distance measurement, and stealth materials.