荧光粉
离子
发光
晶体结构
材料科学
Crystal(编程语言)
分析化学(期刊)
光电子学
化学
矿物学
结晶学
计算机科学
色谱法
有机化学
程序设计语言
作者
Yao Yao,Zhijun Wang,Lingwei Cao,Mingjie Zheng,Xuejiao Wang,Mengya Zhang,Jia Cui,Zhibin Yang,Wenge Ding,Panlai Li
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:11 (21): 12568-12577
被引量:14
摘要
In recent years, efforts have been made to develop narrow-band emission phosphors with excellent performance. Herein, a series of KScSr1-y Ca y Si2O7:0.07Bi3+ narrow-band phosphors were synthesized by a co-substitution method, and the crystal structure, the occupancy of activated ions and luminescence properties were studied in detail. The substitution of Ca2+ for Sr2+ ions resulted in the migration of the activated Bi3+ from the K site to Sr site, accompanied by the regulation of the emission peak from 410 nm to 455 nm, the peak emission half width from 52 nm to 40 nm, and the color purity from the original 78% to 88%. In addition, a warm white LED with low CCT = 3401 K, CRI = 95.5, and CIE color coordinates of (0.3447, 0.3682) has been obtained through the combination of KSS0.6C0.4S:0.07Bi3+ with a commercial green and red phosphor on a UV (370 nm) chip. The results not only provided a strategy based on the manipulation of chemical composition and crystal structure to tune spectral distribution, but also broadens the choice of activators of narrow-band blue-emitting phosphors.
科研通智能强力驱动
Strongly Powered by AbleSci AI