Confinement reaction synthesis of CsPbBr3 quantum dots within long afterglow mesoporous materials as lighting equipment
Materials Today Communications(2024)
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 365nm 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.
更多查看译文
关键词
perovskite quantum dots,afterglow materials,confinement reaction,energy transformation,anti-counterfeit labels,light-emitting diodes
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要