SIC OpenIR
A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs
Gu, Chi; Wang, Xiao-Jun; Xia, Chao; Li, Shuxing; Liu, Peng; Li, Dongzhen; Li, Huili; Zhou, Guohong; Zhang, Jian; Xie, Rong-Jun
2019-07-28
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
Volume7Issue:28Pages:8569
SubtypeArticle
AbstractThermally robust and optically transparent phosphor ceramics are now attracting great attention as promising luminescent materials for high-power white light-emitting diodes (WLEDs). Here, we report a new CaF2-YAG: Ce phosphor ceramic in which the yellow-emitting YAG: Ce particles are embedded in a non-luminescent CaF2 ceramic matrix. The composite phosphor ceramic was fabricated at a very low sintering temperature of 700 degrees C by using a simple hot-pressing method. No detectable interfacial reaction occurs between the YAG: Ce particle and the CaF2 matrix. Owing to the excellent optical properties and high thermal conductivity of CaF2, the prepared CaF2-YAG: Ce phosphor ceramic shows a high quantum efficiency (IQE = 83.2%), and a low thermal quenching (only 9% loss in luminescence at 150 degrees C). WLEDs, fabricated by combining the CaF2-YAG: Ce phosphor ceramic with a 460 nm blue chip of 2 W, exhibited bright white light with a luminous flux of 359.7 lm, a color temperature of 4021-7941 K and a color rendering index of 70.1-82.7. The composite phosphor ceramic showed a better performance than the traditional single-phase YAG: Ce ceramic, enabling it to be used in high-power WLEDs.
DOI10.1039/c9tc02407g
Language英语
WOS Research AreaMaterials Science ; Physics
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26961
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Gu, Chi,Wang, Xiao-Jun,Xia, Chao,et al. A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs[J]. JOURNAL OF MATERIALS CHEMISTRY C,2019,7(28):8569.
APA Gu, Chi.,Wang, Xiao-Jun.,Xia, Chao.,Li, Shuxing.,Liu, Peng.,...&Xie, Rong-Jun.(2019).A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs.JOURNAL OF MATERIALS CHEMISTRY C,7(28),8569.
MLA Gu, Chi,et al."A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs".JOURNAL OF MATERIALS CHEMISTRY C 7.28(2019):8569.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gu, Chi]'s Articles
[Wang, Xiao-Jun]'s Articles
[Xia, Chao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gu, Chi]'s Articles
[Wang, Xiao-Jun]'s Articles
[Xia, Chao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gu, Chi]'s Articles
[Wang, Xiao-Jun]'s Articles
[Xia, Chao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.