{"title":"透明Ce:(Lu,Gd) 3al2o12 & & & ash; al2o3纳米陶瓷颜色转换器通过全玻璃结晶制备用于大功率白光LED/LD照明","authors":"Jie Fu, Ying Zhang, Shaowei Feng, Mathieu Allix, Cécile Genevois, Emmanuel Veron, Zhibiao Ma, Wenlong Xu, Linghan Bai, Ruyu Fan, Yafeng Yang, Hui Wang, Jianqiang Li","doi":"10.26599/jac.2023.9220823","DOIUrl":null,"url":null,"abstract":"Ce dopped Lu<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> (Ce:LuAG) transparent ceramics are considered as promising color converters for solid-state lighting because of their excellent luminous efficiency, high thermal quenching temperature and good thermal stability. However, Ce:LuAG ceramics mainly emit green light. The shortage of red light as well as the expensive price of Lu compounds are hindering their application for white lighting. In this work, transparent (Lu,Gd)<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>-Al<sub>2</sub>O<sub>3</sub> (LuGAG-Al<sub>2</sub>O<sub>3</sub>) nanoceramics with different replacing contents of Gd<sup>3+</sup> (10%-50%) were successfully elaborated via a glass-crystallization method. The obtained ceramics with full nanoscale grains are composed of main LuGAG crystalline phase and secondary Al<sub>2</sub>O<sub>3</sub> phase, exhibiting eminent transparency of 81.0%@780 nm. After doping by Ce<sup>3+</sup>, the Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics show a significant red shift (510 nm→550 nm) and makes up for the deficiency of red light component in the emission spectrum. The Ce:LuAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics with 20% Gd<sup>3+</sup> show high internal quantum efficiency (81.5% in IQE, 96.7% of Ce:LuAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics) and good thermal stability (only 9% loss in IQE at 150 ℃). When combined with blue LED chips (10 W), 0.3%Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics with 20% Gd<sup>3+</sup> successfully realize the high quality warm white LED lighting with a color coordinates of (0.3566, 0.435), a color temperature of 4347 K, a CRI of 67.7 and a luminous efficiency of 175.8 lm·W<sup>-1</sup>. When the transparent 0.3%Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics are excited by blue laser (5 W·mm<sup>-2</sup>), the emission peak position red shifts from 517 nm to 570 nm, the emitted light exhibits a continuous change from green to yellow light green light to orange-yellow light and the maximum luminous efficiency is up to 234.49 lm·W<sup>-1</sup> (20% Gd<sup>3+</sup>). Taking into account the high quantum efficiency, good thermal stability, excellent and adjustable luminous properties, the transparent Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics with different Gd<sup>3+</sup> substitution contents in this paper are believed to be promising candidates for high-power white LED/LD lighting.","PeriodicalId":14862,"journal":{"name":"Journal of Advanced Ceramics","volume":null,"pages":null},"PeriodicalIF":18.6000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Transparent Ce:(Lu,Gd) <sub>3</sub>Al <sub>5</sub>O <sub>12</sub>&ndash;Al <sub>2</sub>O <sub>3</sub> nanoceramic color converters elaborated via full glass crystallization for high-power white LED/LD lighting\",\"authors\":\"Jie Fu, Ying Zhang, Shaowei Feng, Mathieu Allix, Cécile Genevois, Emmanuel Veron, Zhibiao Ma, Wenlong Xu, Linghan Bai, Ruyu Fan, Yafeng Yang, Hui Wang, Jianqiang Li\",\"doi\":\"10.26599/jac.2023.9220823\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ce dopped Lu<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> (Ce:LuAG) transparent ceramics are considered as promising color converters for solid-state lighting because of their excellent luminous efficiency, high thermal quenching temperature and good thermal stability. However, Ce:LuAG ceramics mainly emit green light. The shortage of red light as well as the expensive price of Lu compounds are hindering their application for white lighting. In this work, transparent (Lu,Gd)<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>-Al<sub>2</sub>O<sub>3</sub> (LuGAG-Al<sub>2</sub>O<sub>3</sub>) nanoceramics with different replacing contents of Gd<sup>3+</sup> (10%-50%) were successfully elaborated via a glass-crystallization method. The obtained ceramics with full nanoscale grains are composed of main LuGAG crystalline phase and secondary Al<sub>2</sub>O<sub>3</sub> phase, exhibiting eminent transparency of 81.0%@780 nm. After doping by Ce<sup>3+</sup>, the Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics show a significant red shift (510 nm→550 nm) and makes up for the deficiency of red light component in the emission spectrum. The Ce:LuAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics with 20% Gd<sup>3+</sup> show high internal quantum efficiency (81.5% in IQE, 96.7% of Ce:LuAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics) and good thermal stability (only 9% loss in IQE at 150 ℃). When combined with blue LED chips (10 W), 0.3%Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics with 20% Gd<sup>3+</sup> successfully realize the high quality warm white LED lighting with a color coordinates of (0.3566, 0.435), a color temperature of 4347 K, a CRI of 67.7 and a luminous efficiency of 175.8 lm·W<sup>-1</sup>. When the transparent 0.3%Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics are excited by blue laser (5 W·mm<sup>-2</sup>), the emission peak position red shifts from 517 nm to 570 nm, the emitted light exhibits a continuous change from green to yellow light green light to orange-yellow light and the maximum luminous efficiency is up to 234.49 lm·W<sup>-1</sup> (20% Gd<sup>3+</sup>). Taking into account the high quantum efficiency, good thermal stability, excellent and adjustable luminous properties, the transparent Ce:LuGAG-Al<sub>2</sub>O<sub>3</sub> nanoceramics with different Gd<sup>3+</sup> substitution contents in this paper are believed to be promising candidates for high-power white LED/LD lighting.\",\"PeriodicalId\":14862,\"journal\":{\"name\":\"Journal of Advanced Ceramics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":18.6000,\"publicationDate\":\"2023-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Advanced Ceramics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.26599/jac.2023.9220823\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Ceramics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.26599/jac.2023.9220823","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Transparent Ce:(Lu,Gd) 3Al 5O 12–Al 2O 3 nanoceramic color converters elaborated via full glass crystallization for high-power white LED/LD lighting
Ce dopped Lu3Al5O12 (Ce:LuAG) transparent ceramics are considered as promising color converters for solid-state lighting because of their excellent luminous efficiency, high thermal quenching temperature and good thermal stability. However, Ce:LuAG ceramics mainly emit green light. The shortage of red light as well as the expensive price of Lu compounds are hindering their application for white lighting. In this work, transparent (Lu,Gd)3Al5O12-Al2O3 (LuGAG-Al2O3) nanoceramics with different replacing contents of Gd3+ (10%-50%) were successfully elaborated via a glass-crystallization method. The obtained ceramics with full nanoscale grains are composed of main LuGAG crystalline phase and secondary Al2O3 phase, exhibiting eminent transparency of 81.0%@780 nm. After doping by Ce3+, the Ce:LuGAG-Al2O3 nanoceramics show a significant red shift (510 nm→550 nm) and makes up for the deficiency of red light component in the emission spectrum. The Ce:LuAG-Al2O3 nanoceramics with 20% Gd3+ show high internal quantum efficiency (81.5% in IQE, 96.7% of Ce:LuAG-Al2O3 nanoceramics) and good thermal stability (only 9% loss in IQE at 150 ℃). When combined with blue LED chips (10 W), 0.3%Ce:LuGAG-Al2O3 nanoceramics with 20% Gd3+ successfully realize the high quality warm white LED lighting with a color coordinates of (0.3566, 0.435), a color temperature of 4347 K, a CRI of 67.7 and a luminous efficiency of 175.8 lm·W-1. When the transparent 0.3%Ce:LuGAG-Al2O3 nanoceramics are excited by blue laser (5 W·mm-2), the emission peak position red shifts from 517 nm to 570 nm, the emitted light exhibits a continuous change from green to yellow light green light to orange-yellow light and the maximum luminous efficiency is up to 234.49 lm·W-1 (20% Gd3+). Taking into account the high quantum efficiency, good thermal stability, excellent and adjustable luminous properties, the transparent Ce:LuGAG-Al2O3 nanoceramics with different Gd3+ substitution contents in this paper are believed to be promising candidates for high-power white LED/LD lighting.
期刊介绍:
Journal of Advanced Ceramics is a single-blind peer-reviewed, open access international journal published on behalf of the State Key Laboratory of New Ceramics and Fine Processing (Tsinghua University, China) and the Advanced Ceramics Division of the Chinese Ceramic Society.
Journal of Advanced Ceramics provides a forum for publishing original research papers, rapid communications, and commissioned reviews relating to advanced ceramic materials in the forms of particulates, dense or porous bodies, thin/thick films or coatings and laminated, graded and composite structures.