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高光效和高和值在高度透明的LuAG:Ce光陶中,用于激光二极管照明
Optics express
|February 1, 2024
概括
高透明的LuAG:Ce陶为高功率激光二极管 (LD) 提供了出色的性能. 优化处理产生了卓越的光效和热稳定性,使它们成为理想的绿色光转换器.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 固态照明 固态照明
背景情况:
- 与 (LuAG:Ce) 合剂合的质石陶 (PC) 对于高功率激光二极管 (LD) 应用至关重要,因为它们的热稳定性和高和值值.
- 在先进的照明系统中,开发高度透明的LuAG:Ce PC对于有效的绿灯转换至关重要.
研究的目的:
- 研究烧结添加剂和工艺对LuAG:Ce PCs的传导率和微观结构的影响.
- 为了将光学特性和微观结构与开发的陶的发光性能相关联.
- 为了证明高度透明的LuAG:CePC作为绿色光转换器的适用性,用于高功率的LDs.
主要方法:
- 对烧结添加剂 (MgO,TEOS) 和工艺 (真空预烧结,热静态压缩) 的系统研究.
- 陶微观结构和800 nm的光学传导率的表征.
- 评估发光性能,包括光效率和和值.
- 在激光照射下评估热性能.
主要成果:
- 使用0.1%重量%的MgO和0.5%重量%的TEOS与优化烧结实现了80%的透射率 (@800 nm,1.5 mm) 的LuAG:CePC.
- 与非HIP样本相比,热静态压缩 (HIP) 的传导率增加了11%,这与减少的粒际毛孔有关.
- 同时实现高光效率 (253 lm/W) 和和度值 (>46 W/mm2).
- 在3W激光照射下的低表面温度 (66.4°C) 表明散热良好.
结论:
- 在LuAG:Ce PC中,高透明度与孔隙和氧气空缺的减少有很强的相关性.
- 优化的加工路径产生了具有优良光电子和热性能的高度透明的LuAG:CePC.
- 这些发现证实了高度透明的LuAG:Ce PCs作为高功率LD照明应用的优质绿色光转换器的潜力.
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