白光LED用CsPbBr_(3)钙钛矿量子点玻璃制备及其稳定性

Preparation and Stability of CsPbBr_(3) Perovskite Quantum Dots Glass for White LED

CsPbBr_(3)钙钛矿量子点(PQDs)在光、热、空气中会发生不同程度的降解,导致严重的荧光猝灭,限制了其在光电器件中的应用。本文采用传统的熔融淬火和热处理方法,将CsPbBr_(3) PQDs与锌硼硅酸盐玻璃复合,成功制备了CsPbBr_(3) PQDs@glass复合发光材料。研究表明,CsPbBr_(3) PQDs@glass的发射峰峰值为520 nm,半峰宽(FWHM)为20 nm,是一种绿光发射材料。同时该材料具有良好的光和水稳定性,蓝光下连续照射30 d,发光强度仅降低了约4%,水中浸泡30 d,其发光强度仍能保持初始强度的95%。此外,利用CsPbBr_(3) PQDs@glass成功封装了白光LED器件,说明该材料在照明和显示领域具有潜在的应用前景。

CsPbBr_(3) perovskite quantum dots(PQDs)will degrade in different degrees in light,heat and air,which limits their application in optoelectronic devices.In this paper,the CsPbBr_(3) PQDs@glass was successfully prepared by traditional melting quenching and heat treatment methods,in which CsPbBr_(3) PQDs and zinc borosilicate glass were composited.The results show that the CsPbBr_(3) PQDs@glass is a kind of green emission material peaked at 520 nm with a half peak width(FWHM)of 20 nm.At the same time,the material has good light and water stability.After continuous irradiation under blue light for 30 d,the emission intensity is only reduced by about 4%.After soaking in water for 30 d,the emission intensity can still maintain 95%of its initial intensity.In addition,the white LED device is successfully encapsulated by the composite,which shows that the material has potential application in the field of lighting and display.