材料科学
余辉
量子点
介孔材料
钙钛矿(结构)
纳米技术
工程物理
化学工程
催化作用
量子力学
生物化学
化学
物理
伽马射线暴
工程类
作者
Pan Xiong,Xin Yang,Jianhua Shen
标识
DOI:10.1016/j.mtcomm.2024.108590
摘要
Long afterglow materials are fluorescent materials with unique optical properties and excellent light-converting materials. However, long afterglow materials have the problem of emitting relatively single colors that are difficult to change, thus limiting their further application. Here, we propose a composite method of fully inorganic cesium lead perovskite quantum dots (QDs) with long afterglow materials, which uses the confinement reaction of CsPbBr3 in the pores of mesoporous CaAl2O4:Eu2+, Nd3+ (M-CAO) during high-temperature melting to form M-CAO-CsPbBr3. M-CAO-CsPbBr3 has better thermal and photostability than the common composite materials. Meanwhile, CsPbBr3 QDs can generate green afterglow emissions by absorbing the afterglow energy of M-CAO. In addition, the polydimethylsiloxane (PDMS) film formed by mixing the composite material phosphor M-CAO-CsPbBr3 with PDMS by heating and curing showed bright green fluorescence under 365 nm UV illumination, and it could still exhibit a weak green afterglow under dark conditions after stopping the irradiation. This article is an essential reference for long afterglow materials and anti-counterfeit labels.
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