基ZnAl2O4:0.5%Cr3+用于WLED的红色陶
Wenchao Ji1, Xueke Xu1, Ming Qiang1
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, No. 899 Huiwang East Road, Shanghai 201800, China.
Materials (Basel, Switzerland)
|April 13, 2024
概括
这项研究开发了一种新的红色陶,使用火花等离子体烧结来增强白色发光二极管 (WLED). 这种新材料改善了色彩染,并弥补了LED系统中红光缺陷.
科学领域:
- 材料科学 材料科学 材料科学
- 固态照明 固态照明
- 发光的阴影是什么意思
背景情况:
- 传统的白色发光二极管 (WLED) 通常缺乏足够的红光发射.
- 添加的伊特花 (Ce3+:YAG) 封装的蓝色LED是常见的,但在色谱上有局限性.
- 开发高效的红色光剂对于提高WLED性能至关重要.
研究的目的:
- 为了合成和表征一种新的基于螺旋的Cr3+化红色陶.
- 为了研究开发的的发光特性,热稳定性和量子效率.
- 评估其在补偿WLED红光缺陷方面的性能.
主要方法:
- 使用火花等离子烧结 (SPS) 制备ZnAl2O4:0.5%Cr3+陶.
- 进行相位和光谱分析以确认材料结构和发光.
- 使用度火建模来了解排放机制.
- 在高温下评估了导热性和热火.
主要成果:
- 用SPS烧结的ZnAl2O4:0.5%Cr3+表现出良好的密度,Cr3+被纳入[AlO6]八面体中.
- 狭带辐射和毫秒级寿命归因于四四极相互作用机制.
- 显示出出色的热稳定性,具有高的导热率 (14W·m-1·K-1在150°C) 和维持70%的PL强度在687nm.
- 实现了78%的内部量子效率 (IQE).
结论:
- 用Cr3+合的ZnAl2O4陶是用于WLED应用的有希望的发出红色的体.
- 它的优越热性能和高IQE有助于提高WLED性能.
- 用Ce3+封装:YAG有效地弥补了红光缺陷,增强了色温,并提高了色彩染指数 (R9).
关键词:
Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3接方式 接方式 接方式陶陶是一种陶.斯宾尼尔斯宾尼尔斯是什么意思更多相关视频
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