应用化学2025，Vol.42Issue(5)：701-711,11.DOI:10.19894/j.issn.1000-0518.240411
SrS∶Eu2+和SrAl2O4∶Eu2+,Dy3+长余辉发光粉封装发光二极管的光效
Luminous Efficacy of Light Emitting Diode with SrS∶Eu2+and SrAl2O4∶Eu2+,Dy3+Long Afterglow Phosphors
摘要
Abstract
Light-emitting diode(LED)sources have become the primary choice for modern lighting systems.To address the flicker issue caused by alternating current(AC)power supplies in LED devices,the use of afterglow materials to mitigate flickering has emerged as a key area of research.However,the optoelectronic performance of LED devices encapsulated with afterglow materials has yet to be systematically investigated.In this study,SrS∶Eu2⁺ and SrAl₂O₄∶Eu2⁺,Dy3⁺ afterglow phosphors were synthesized via a high-temperature solid-state reaction,both of which can be efficiently excited by blue light,yielding red emission at 621 nm and green emission at 518 nm,respectively.By encapsulating these phosphors with a 450 nm blue LED chip,and fine-tuning the phosphor-to-encapsulation resin ratio,LED devices with luminous efficacy reaching 130 lm/W and a color rendering index exceeding 85 were achieved.These devices meet the requirements for general white-light illumination,underscoring the promising application prospects of long-afterglow phosphors in LED lighting technology.关键词
余辉荧光粉/发光二极管/光效/显色指数Key words
Afterglow phosphors/Light-emitting diode/Luminous efficacy/Color rendering index分类
化学引用本文复制引用
楚献智,庞然,韩松林,姜丽宏,李慧敏,李晓东,张粟,张洪杰..SrS∶Eu2+和SrAl2O4∶Eu2+,Dy3+长余辉发光粉封装发光二极管的光效[J].应用化学,2025,42(5):701-711,11.基金项目
国家重点研发项目(Nos.2019YFA0709100,2019YFA0709102)资助 Supported by the National Key R&D Program of China(Nos.2019YFA0709100,2019YFA0709102) （Nos.2019YFA0709100,2019YFA0709102）
