SIOM OpenIR  > 中科院强激光材料重点实验室
Influence of Ce ion Concentration on Fluorescence Properties of Ce: TAG-Al2O3 Eutectic Mixed Crystals
He, Chongjun; Sai, Qinglin; Xia, Changtai; Hu, Huiling; hechongjun@nuaa.edu.cn
2017
Source PublicationCryst. Res. Technol.
Volume52Issue:7
AbstractCombining a blue LED chip with phosphor, white light can be obtained. In traditional white LEDs, the phosphor was dispersed in resin in a form of particles. Particle-resin composite has complex packaging and poor thermal stability. For high-power white LEDs, this combination cannot provide long-term stable work because of photo-degradation of the organic epoxy resin under high irradiation and high temperatures. Here we develop resin-free phosphor (Tb(1-n)Cen)(3)Al5O12-Al2O3 eutectic mixed crystals (Ce: TAG-Al2O3) to eliminate the photo-degradation issue of the organic material. They were grown by optical floating zone method. X-ray diffraction and scanning electron microscopy show that these materials have typical eutectic mixed crystal structure of sapphire and garnet phases, in which lamellar spacing is in an order of tens of microns. The doped Ce3+ ions do not influence basic structure of TAG crystal. Ce3+ ion replaces Tb3+ ion rather than Al3+ ion. Photoluminescence emission and excitation properties of the eutectic mixed crystals were investigated. They get to maximal value with 2.0% Ce-3+,Ce- and have wide excitation band at 470 nm. Luminous efficiency of eutectic mixed crystal- packaged LED is higher than that of particle- resin composite packaged LED. These results show that Ce: TAG-Al2O3 eutectic mixed crystals are promising phosphor for white LEDs.
SubtypeArticle
Department材料
DOI10.1002/crat.201700056
Funding OrganizationFundamental Research Funds for the Central Universities [NZ2015112] ; Fundamental Research Funds for the Central Universities [NZ2015112] ; Fundamental Research Funds for the Central Universities [NZ2015112] ; Fundamental Research Funds for the Central Universities [NZ2015112]
Indexed BySCI
Funding OrganizationFundamental Research Funds for the Central Universities [NZ2015112] ; Fundamental Research Funds for the Central Universities [NZ2015112] ; Fundamental Research Funds for the Central Universities [NZ2015112] ; Fundamental Research Funds for the Central Universities [NZ2015112]
WOS IDWOS:000405448700002
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.siom.ac.cn/handle/181231/28109
Collection中科院强激光材料重点实验室
Corresponding Authorhechongjun@nuaa.edu.cn
Affiliation中国科学院上海光学精密机械研究所
Recommended Citation
GB/T 7714
He, Chongjun,Sai, Qinglin,Xia, Changtai,et al. Influence of Ce ion Concentration on Fluorescence Properties of Ce: TAG-Al2O3 Eutectic Mixed Crystals[J]. Cryst. Res. Technol.,2017,52(7).
APA He, Chongjun,Sai, Qinglin,Xia, Changtai,Hu, Huiling,&hechongjun@nuaa.edu.cn.(2017).Influence of Ce ion Concentration on Fluorescence Properties of Ce: TAG-Al2O3 Eutectic Mixed Crystals.Cryst. Res. Technol.,52(7).
MLA He, Chongjun,et al."Influence of Ce ion Concentration on Fluorescence Properties of Ce: TAG-Al2O3 Eutectic Mixed Crystals".Cryst. Res. Technol. 52.7(2017).
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
[He, Chongjun]'s Articles
[Sai, Qinglin]'s Articles
[Xia, Changtai]'s Articles
Baidu academic
Similar articles in Baidu academic
[He, Chongjun]'s Articles
[Sai, Qinglin]'s Articles
[Xia, Changtai]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[He, Chongjun]'s Articles
[Sai, Qinglin]'s Articles
[Xia, Changtai]'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.