第二相引入荧光转换材料实现激光驱动高均匀性白光光源

doi:10.15541/jim20220074

无机材料学报 ›› 2022, Vol. 37 ›› Issue (8): 891-896.DOI: 10.15541/jim20220074

第二相引入荧光转换材料实现激光驱动高均匀性白光光源

邓陶丽¹^,²(), 陈河莘¹, 黑玲丽¹, 李淑星¹(), 解荣军¹()

1.厦门大学材料学院, 固体表面物理化学国家重点实验室, 福建省表界面工程与高性能材料重点实验室, 厦门 361005
2.安顺学院化学化工学院, 安顺 561000

收稿日期:2022-02-15 修回日期:2022-04-07 出版日期:2022-08-20 网络出版日期:2022-04-07
通讯作者: 李淑星, 博士. E-mail: lishuxing@xmu.edu.cn;
解荣军, 教授. E-mail: rjxie@xmu.edu.cn
作者简介:邓陶丽(1989-), 女, 博士研究生. E-mail: dengtaoli77@163.com

Achieving High Light Uniformity Laser-driven White Lighting Source by Introducing Secondary Phases in Phosphor Converters

DENG Taoli¹^,²(), CHEN Hexin¹, HEI Lingli¹, LI Shuxing¹(), XIE Rongjun¹()

1. State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen 361005, China
2. College of Chemistry and Chemical Engineering, Anshun University, Anshun 561000, China

Received:2022-02-15 Revised:2022-04-07 Published:2022-08-20 Online:2022-04-07
Contact: LI Shuxing, PhD. E-mail: lishuxing@xmu.edu.cn;
XIE Rongjun, professor. E-mail: rjxie@xmu.edu.cn
About author:DENG Taoli (1989-), female, PhD candidate. E-mail: dengtaoli77@163.com
Supported by:
National Natural Science Foundation of China(51832005);National Natural Science Foundation of China(U2005213);Fujian Provincial Science and Technology Project(2020I0002)

摘要/Abstract

摘要：

激光驱动的白光光源在超高亮度、高准直性和远距离照明领域具有很大的应用潜力, 但由于蓝光激光和转换荧光在光源性质上的失配, 造成激光驱动白光光源的光均匀性差。本研究在Y₃Al₅O₁₂: Ce³⁺(YAG)荧光玻璃薄膜(PiG)中引入不同种类的第二相, 如TiO₂、BN、Al₂O₃或SiO₂作为散射介质来调节光路, 并对第二相的掺杂浓度分别进行了优化。研究分析了掺入不同种类第二相的YAG PiG获得激光驱动白光光源的实物照明图像和散斑图像、亮度和色温的角分布情况及其光学性质。结果发现, 引入第二相大大改善了白光光源的亮度和色温均匀性, 其中具有最大相对反射率的YAG-TiO₂ PiG, 获得综合性能最佳的高均匀性白光光源, 在蓝光激光激发下, 其发光饱和阈值和光通量值达到最高, 分别为20.12 W/mm²和1056.6 lm。本研究为荧光转换材料中散射介质的选择提供了指导, 为实现高均匀性、高亮度的激光驱动白光光源奠定了基础。

关键词: 光均匀性, 激光驱动白光光源, 光散射, 荧光玻璃薄膜, 光学性质

Abstract:

Laser-driven white lighting sources have great potential for applications with super-high brightness, high directionality and long distance illumination, but are usually limited by their poor uniformity due to mismatch between blue laser light and phosphor converted light. In this work, a secondary phase of TiO₂, BN, Al₂O₃ or SiO₂ was introduced as scattering media in the Y₃Al₅O₁₂: Ce³⁺ (YAG) phosphor-in-glass (PiG) film to regulate the light path, where the optimum concentration of the secondary phase was determined, respectively. The images of illumination and speckle, angular distributions of luminance and color temperature, as well as optical properties of the white light produced by the different secondary phases based-YAG PiG films were investigated. The light uniformity in luminance and color temperature is greatly improved by introducing secondary phases, among which TiO₂ is demonstrated as the best one as it has the largest relative reflective index. In addition, the YAG-TiO₂ PiG film has the largest luminance saturation threshold of 20.12 W/mm² and the highest luminous flux of 1056.6 lm under blue laser irradiation. This work paves an avenue to choose appropriate scattering media in PiG films for realizing more uniform and brighter laser-driven white lighting source.

Key words: light uniformity, laser-driven white lighting source, scattering, phosphor-in-glass film, optical properties

中图分类号:

O482

邓陶丽, 陈河莘, 黑玲丽, 李淑星, 解荣军. 第二相引入荧光转换材料实现激光驱动高均匀性白光光源[J]. 无机材料学报, 2022, 37(8): 891-896.

DENG Taoli, CHEN Hexin, HEI Lingli, LI Shuxing, XIE Rongjun. Achieving High Light Uniformity Laser-driven White Lighting Source by Introducing Secondary Phases in Phosphor Converters[J]. Journal of Inorganic Materials, 2022, 37(8): 891-896.

图/表 12

Fig. S1 CCT (a) and illuminance (b) distribution curves at different angles (10°~170°) of YAG PiG films with different TiO2, BN, Al2O3, or SiO2 contents

Table S1 CCT uniformity of YAG PiG films with different TiO2, BN, Al2O3, or SiO2 contents under blue laser excitation

Uni_CCT/%	0	10%	15%	20%	25%	30%
TiO₂	10.4	91.5	94.3	94.8	91	91
BN	10.4	73.6	86.9	88.4	94.1	90.9
Al₂O₃	10.4	18.1	-	84.2	-	89.3
SiO₂	10.4	12.1	13.7	19.4	16.2	48.3

Fig. 1 (a-e) Cross-section and (f-j) top-view SEM images of (a, f) YAG, (b, g)YAG-TiO2, (c, h) YAG-BN, (d, i) YAG-Al2O3, (e, j) YAG-SiO2 PiG films; (k-o) SEM image of the selected area of the YAG-TiO2 PiG film and corresponding EDS mappings of Y, Al, Ca and Ti

Fig. S2 Photoluminescence spectra and lifetime of YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, YAG-SiO2 PiG films

Fig. 2 (a-e) Illumination images of laser-driven white light sources from YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, and YAG-SiO2 PiG films under excitation of a laser power density of 1.72 W/mm2, and (f-j) Speckle images of YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, and YAG-SiO2 PiG films under 445 nm laser excitation

Table 1 Luminance uniformity of YAG-based PiG films with different scattering media

Sample	None	SiO₂	Al₂O₃	TiO₂	BN
$\bar{x}$/(Mcd·m^–2)	0.51	0.25	0.22	0.12	0.11
σ	1260	554	461	248	205

Fig. 3 (a) Luminance of light spots in YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, and YAG-SiO2 PiG films under excitation with a laser power of 0.015 W, respectively, (b) luminance distribution curves along the light spot diameter, and (c) photograph of the light spot at a distance of 10 m when the YAG-BN PiG film pumped by a blue LD

Fig. 4 (a) CCT and (b) illuminance distribution curves at different angles (10°-170°) of YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, and YAG-SiO2 PiG films

Table 2 CCT uniformity of YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, YAG-SiO2 PiG films under blue laser excitation

Sample	None	SiO₂	Al₂O₃	BN	TiO₂
Max/K	100000	50780	6720	7124	6620
Min/K	4745	6798	5193	5287	5073
Ave/K	45565	14080	5815	5621	5353
Uni/%	10.4	48.3	89.3	94.1	94.8

Table 3 Relative refractive indexes of secondary phases introduced into the YAG-PiG film

	SiO₂	Al₂O₃	BN	TiO₂
n₂	1.48	1.76	1.73	2.61
R	0.000045	0.0064	0.0051	0.073

Fig. 5 (a) Quantum efficiency and absorption efficiency, (b) luminous flux, and (c) luminous efficacy of YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, and YAG-SiO2 PiG films

Fig. S3 Temperatures of light spots of YAG, YAG-TiO2, YAG-BN, YAG-Al2O3, YAG-SiO2 PiG films

参考文献 17

[1]	WIERER J J, TSAO J Y, SIZOV D S. Comparison between blue lasers and light-emitting diodes for future solid-state lighting. Laser & Photonics Reviews, 2013, 7(6): 963-993.
[2]	LI S, WANG L, HIROSAKI N, et al. Color conversion materials for high-brightness laser-driven solid-state lighting. Laser & Photonics Reviews, 2018, 12(12): 1800173.
[3]	LIANG Y, DING X, YAN C, et al. Phosphor-in-glass (PIG) converter sintered by a fast Joule heating process for high-power laser- driven white lighting. Optics Express, 2021, 29(10): 14218. DOI URL
[4]	ZHENG P, LI S, WANG L, et al. Unique color converter architecture enabling Phosphor-in-Glass (PiG) films suitable for high- power and high-luminance laser-driven white lighting. ACS Applied Materials & Interfaces, 2018, 10(17): 14930-14940.
[5]	YOU S, LI S, ZHENG P, et al. A thermally robust La₃Si₆N₁₁: Ce-in-glass film for high-brightness blue-laser-driven solid state lighting. Laser & Photonics Reviews, 2019, 13(2): 1800216.
[6]	YAO Q, HU P, SUN P, et al. YAG:Ce³⁺transparent ceramic phosphors brighten the next-generation laser-driven lighting. Advanced Materials, 2020, 32(19): 1907888. DOI URL
[7]	PENG Y, HUANG Y, LEI Z, et al. Rapid and efficient preparation of phosphor-in-glass converter by induction heating for high-power white LEDs/LDs. Materials Today Communications, 2021, 29: 102839.
[8]	AVANAKI A, ESPIG K, KIMPE T, et al. Perceptual uniformity of commonly used color spaces. Proceedings of SPIE-The International. Society for Optical Engineering, 2014: 9041.
[9]	LIU P, GUAN Z, ZHOU T, et al. Laser regulation for variable color temperature lighting with low energy consumption by microlens arrays. Appl. Opt., 2021, 60(19): 5652-5661. DOI URL
[10]	MA Y, LUO X. Small-divergent-angle uniform illumination with enhanced luminance of transmissive phosphor-converted white laser diode by secondary optics design. Optics and Lasers in Engineering, 2019, 122: 14-22. DOI URL
[11]	CHEN K, HAN H, CHEN H, et al. White light emitting diodes with enhanced CCT uniformity and luminous flux using ZrO₂ nanoparticles. Nanoscale, 2014, 6(10): 5378-5383. DOI URL
[12]	WU B, LUO X, ZHENG H, et al. Effect of gold wire bonding process on angular correlated color temperature uniformity of white light-emitting diode. Opt. Express, 2011, 19(24): 24115-24121. DOI URL
[13]	LIU J, WANG W, LU X, et al. Controlling phosphor particle distribution for high-angular-color-uniformity and low-cost LEDs based on thermalcapillary flow. IEEE Transactions on Electron Devices, 2021, 68(2): 592-596. DOI URL
[14]	LAI M, QUOC ANH N D, MA H, et al. Scattering effect of SiO₂ particles on correlated color temperature uniformity of multi-chip white light LEDs. Journal of the Chinese Institute of Engineers, 2016, 39(4): 468-472. DOI URL
[15]	HOU Y, CHEN C, YING S, et al. The effects of TiO₂ diffuser- loaded encapsulation on corrected color temperature uniformity of remote phosphor white leds. Applied Sciences, 2019, 9(4): 675. DOI URL
[16]	NGUYEN A Q D, NGUYEN T T, LEE H. Selection of scattering enhancement particles for improving color homogeneity and luminous flux of phosphor-converted LEDs. Journal of the Chinese Institute of Engineers, 2017, 40(4): 307-312. DOI URL
[17]	XU Y, LI S, ZHENG P, et al. A search for extra-high brightness laser-driven color converters by investigating thermally-induced luminance saturation. Journal of Materials Chemistry C, 2019, 7(37): 11449-11456. DOI URL

第二相引入荧光转换材料实现激光驱动高均匀性白光光源

Achieving High Light Uniformity Laser-driven White Lighting Source by Introducing Secondary Phases in Phosphor Converters

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