白光LED远程荧光粉技术研究进展与展望

周青超; 柏泽龙; 鲁路; 钟海政

doi:10.3788/CO.20150803.0313

白光LED远程荧光粉技术研究进展与展望

doi: 10.3788/CO.20150803.0313

周青超^1, ,,
柏泽龙^1, ,,
鲁路^2, ,,
钟海政^1, ,

1.
北京理工大学材料学院纳米光子学与超精密光电系统北京市重点实验室, 北京 100081;
2.
北京宇极芯光光电有限技术公司, 北京 100081

基金项目: 北京市科技新星计划资助项目(No.XX2014B040);北京高等学校青年英才资助项目(No.YETP1231)

详细信息

通讯作者:
周青超 (1992-)，男，云南腾冲人，硕士研究生，2014年于北京理工大学获得学士学位，主要从事量子点白光LED器件方面的研究。E-mail:1120102160@bit.edu.cn

柏泽龙 (1989-)，男，河北石家庄人，博士研究生，2011年于北京理工大学获得学士学位，主要从事量子点复合材料的研究。E-mail:bzl1989@foxmail.com

鲁路 (1981-)，男，湖北宜昌人，博士，2003年于武汉大学获得学士学位,2008年于中国科学院理化技术研究所获得博士学位，主要从事白光LED生产方面的研究。 E-mail:lulu@yujigroup.com

钟海政 (1981-)，男，河北清河人，教授、博士生导师，2003年于吉林大学获得学士学位，2008年于中国科学院化学研究所获得博士学位，主要从事量子点材料及其照明显示应用方面的研究。E-mail:hzzhong@bit.edu.cn

中图分类号: TN104.3;TH691.9
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出版历程
- 收稿日期: 2014-11-13
- 录用日期: 2015-02-15
- 刊出日期: 2015-01-25

Remote phosphor technology for white LED applications:advances and prospects

ZHOU Qing-chao^{1
, ,},
BAI Ze-long^{1
, ,},
LU Lu^{2
, ,},
ZHONG Hai-zheng^{1
, ,}

1.
Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Material Science & Engineering, Beijing Institute of Technology, Beijing 100081, China;
2.
Beijing Yuji Science and Technology Co., Ltd, Beijing 100081, China

摘要

摘要: 远程荧光粉技术通过将荧光粉与芯片分离,降低了荧光粉的工作环境温度,提升了荧光粉的稳定性,改善了白光LED的照明品质和光效,同时有望降低LED眩晕度,提供大面积平板光源,在未来照明与显示应用中具有重要意义。远程荧光粉技术的白光LED将向多功能化、高性能化和智能化方向发展。本文将综述白光LED远程荧光粉技术的研究进展,主要介绍其封装工艺的优化、评价参数的构建和分析,以及相关荧光材料的发展现状。
- 远程荧光粉技术 /
- 白光LED /
- 封装工艺 /
- 荧光材料 /
- 量子点
Abstract: Remote phosphor technology for white LEDs provides new encapsulation construction, which separates the blue chip and color converting materials at a large distance. This technology could potentially reduce the working temperature of phosphors and solve the thermal quenching problems and enable us to fabricate flat panel lighting source with enhanced lighting quality. Therefore, remote phosphor technology has drawn a great of attentions from both of the scientific and industrial communities. White LED applications with remote phosphor technology will be further developed into be more functional, high-performance and intelligent. In this review, we summarize the recent advances in remote phosphor technology for white LED with emphasis on the encapsulation structures, devices evaluation as well as the novel down conversion materials. The prospects of remote phosphor technology are also presented.
- remote phosphor technology /
- white LED /
- encapsulation technics /
- fluorescent materials /
- quantum dots

HTML全文

图 1 白光LED面临的问题与可能的解决方法

Figure 1. Problems and solutions for current white LEDs

下载: 全尺寸图片幻灯片

图 2 不同封装结构的白光LED示意图^[6]

Figure 2. Arrangements of phosphor in white LED^[6]

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图 5 远程荧光粉技术的白光LED的评价参数组成

Figure 5. Evaluation scheme of remote phosphor white LED

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图 6 (a)基于双层发光薄膜的白光LED远程荧光粉技术；(b)基于白光LED远程荧光粉技术的色温可调节台灯^[91]

Figure 6. (a)High-quality remote phosphor white LED was achieved by using bilayered QD films. (b)A remote phosphor-based white LED lamp with turntable color temperature ^[91]

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图 7 (a)掺杂有量子点的光学玻璃^[98]；(b)卷曲的红色复合发光薄膜^[99]；(c)红绿蓝3种纯色的复合薄膜发光片以及混合量子点的白光发光片^[100]

Figure 7. Photographs of (a)an optical glass doped quantum dot^[98]; (b)composite film with rolled-shape under UV light^[99]; (c)composite films with pure color and white light under UV-365 nm light^[100]

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图 3 (a)Ce∶YAG荧光粉用有机树脂^[12]和玻璃陶瓷作为基质制作的发光片；(b)两种基质的Ce∶YAG荧光粉发光片的热稳定性对比^[22]

Figure 3. (a)Photographs of Ce∶YAG glass ceramic^[22] and Ce∶YAG phosphor dispersed in organic-resin^[12]. (b)The relative PL intensities of Ce∶YAG glass ceramic and Ce∶YAG phosphor dispersed in organic-resin in the temperature range of 25～200 ℃^[22]

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图 4 (a)远程荧光粉技术白光LED中3种不同的外封装胶形状^[29]；(b)使用一层很薄的封装胶进行隔离的双层荧光粉结构示意图^[32]；(c)采用不同厚度的曲面远程荧光粉形状优化白光LED发光均匀性^[35]；(d)“倒锥形”的远程荧光粉技术结构示意图^[43]

Figure 4. Schematic cross-sectional view of different encapsulation shapes. (a)Three different geometries of the encapsulation dome^[24]; (b)dual-layer remote phosphor structures^[32]; (c)optimized phosphor layer with ellipsoidal surface^[35]; (d)ring-remote phosphor structure^[43]

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表 1 稀土荧光粉与量子点荧光材料对比

Table 1. Comparisons between rare earth phosphors and quantum dot materials

下载: 导出CSV

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