无机材料学报2024，Vol.39Issue(4)：449-456,8.DOI:10.15541/jim230501
Pb2+对掺杂硼硅酸盐玻璃中CsPbBr3钙钛矿量子点发光性能的影响
Effect of Pb2+ on the Luminescent Performance of Borosilicate Glass Coated CsPbBr3 Perovskite Quantum Dots
岳仔豪 1杨小兔 2张正亮 2邓瑞翔 2张涛 2宋力昕1
作者信息
- 1. 中国科学院 上海硅酸盐研究所, 上海 200050||上海科技大学 物质科学与技术学院, 上海 201210
- 2. 中国科学院 上海硅酸盐研究所, 上海 200050
- 折叠
摘要
Abstract
Perovskite CsPbBr3 quantum dots(PQDs)encapsulated within borosilicate glass can markedly improve their stability,expanding their applicability in sectors under lighting and display of light emitting diode(LED).However,this encapsulation has unintended consequence of reducing both the photoluminescence(PL)intensity and PL quantum yields(PLQY).This research aims to enhance the PL intensity of CsPbBr3 perovskite quantum dots glass(PQDs@glass)by exploring the effects of thermal induction temperature and Pb2+ content on its structural properties.The results demonstrate that the optimal thermal induction temperature for maximizing PL intensity is 460℃,with a Pb2+ concentration of 6 mol.The study revealed that the increase in Pb2+ concentration led to the densification of the glass network structure and altered the diffusion behavior of glass components.This alteration affected the crystallization process of PQDs,which ultimately resulted in variations in the luminous intensity of PQDs@glass.This study achieved a highly desirable PLQY of 95.6%for PQDs@glass and successfully carried out size-controllable preparation of PQDs within a borosilicate glass matrix.Remarkably,the obtained results show that over 86%of the obtained PQDs particles fall within a narrow size range of 6-14 nm with average diameter of 10 nm,leading to a well-defined size distribution.Notably,these PQDs exhibit exceptional stability,as evidenced by their ability to retain an extraordinary 98.9%of the initial emission intensity following ten consecutive thermal cycles spanning from room temperature to 200℃.Finally,to verify its applicability in LED lighting and display,the obtained PQDs@glass powder was blended with polydimethylsiloxane(PDMS),yielding exemplary LED devices which exhibit an exceptional color gamut range surpassing 110%of the standard RGB(sRGB)color space.In conclusion,this study lays the groundwork for the scalable synthesis of PQDs@glass and paves the way for its utilization in the realm of LED device technology.关键词
CsPbBr3/Pb2+/LED/量子点/硼硅酸盐玻璃Key words
CsPbBr3/Pb2+/LED/quantum dot/borosilicate glass分类
化学化工引用本文复制引用
岳仔豪,杨小兔,张正亮,邓瑞翔,张涛,宋力昕..Pb2+对掺杂硼硅酸盐玻璃中CsPbBr3钙钛矿量子点发光性能的影响[J].无机材料学报,2024,39(4):449-456,8.
