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Aggregation‐Induced Emission Features of Organometal Halide Perovskites and Their Fluorescence Probe Applications
Author(s) -
Niu Yuwei,
Zhang Feng,
Bai Zelong,
Dong Yuping,
Yang Jian,
Liu Ruibin,
Zou Bingsuo,
Li Jingbo,
Zhong Haizheng
Publication year - 2015
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201400403
Subject(s) - photoluminescence , halide , materials science , fluorescence , absorption (acoustics) , alkyl , quantum yield , optoelectronics , exciton , photochemistry , absorption spectroscopy , chemical physics , inorganic chemistry , optics , chemistry , organic chemistry , condensed matter physics , physics , composite material
Organometal hybrid perovskites exhibit tunable absorption and photoluminescence spectra that originate from the adjustable excitons of the self‐assembled quantum‐well structures. The aggregation‐induced emission (AIE) features of (RNH 3 ) 2 PbI 4 (R = alkyl, C n H 2 n +1 , n = 4, 12, 16, 18) as well as their reversible photoluminescence response to pH value are demonstrated. This interesting phenomenon correlates with the formation of quantum‐well structure, which is a novel AIE mechanism. The temperature sensors based on organometal hybrid perovskites are also investigated. The combination of high sensitivity (1.3% K −1 ) and good reversibility (>500 cycles) of organometal halide perovskites to temperature in a large temperature range (0–80 °C) makes them to be versatile systems for the temperature sensor applications. Furthermore, as a proof of concept, the application of organometal hybrid perovskites in 2D spatial imaging and NIR light detection is also presented.