CIOMP OpenIR
A high efficiency broad-band near-infrared Ca2LuZr2Al3O12Cr3+ garnet phosphor for blue LED chips
Zhang, L. L.; Zhang, S.; Hao, Z. D.; Zhang, X.; Pan, G. H.; Luo, Y. S.; Wu, H. J.; Zhang, J. H.
2018
Source PublicationJournal of Materials Chemistry C
ISSN2050-7526
Volume6Issue:18Pages:4967-4976
AbstractThe garnet Ca2LuZr2Al3O12 (CLZA) is a promising broad-band NIR phosphor for blue LED chips when it is doped with Cr3+. The photoelectric efficiency of the pc-LED fabricated from CLZA:Cr3+ and a 460 nm LED chip, in the 750-820 nm spectral range, was 4.1%, which was superior to the efficiency of a tungsten lamp (2.9%). In CLZA's structure, Cr3+ occupied Ca2+/Lu3+ and Zr4+ sites and showed two luminescence centers. The crystal strength parameters of Ce3+ and Cr3+ were calculated to show the coordination environment of the dodecahedral and octahedral sites in CLZA. Low absorbance of Cr3+ was the main constraint on quantum efficiency. Ce3+ was thus introduced as a sensitizer to improve the absorbance. An efficient energy transfer process can be observed between Ce3+ and Cr3+ in CLZA. The temperature dependent properties of CLZA:Cr3+ were also studied. Two thermal processes (thermal quenching and thermal ionization) were observed and discussed in detail.
Keyword5d-level energies crystalline environment deep-tissue ce3+ field Materials Science Physics
DOI10.1039/c8tc01216d
Indexed BySCI ; EI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/60867
Collection中国科学院长春光学精密机械与物理研究所
Recommended Citation
GB/T 7714
Zhang, L. L.,Zhang, S.,Hao, Z. D.,et al. A high efficiency broad-band near-infrared Ca2LuZr2Al3O12Cr3+ garnet phosphor for blue LED chips[J]. Journal of Materials Chemistry C,2018,6(18):4967-4976.
APA Zhang, L. L..,Zhang, S..,Hao, Z. D..,Zhang, X..,Pan, G. H..,...&Zhang, J. H..(2018).A high efficiency broad-band near-infrared Ca2LuZr2Al3O12Cr3+ garnet phosphor for blue LED chips.Journal of Materials Chemistry C,6(18),4967-4976.
MLA Zhang, L. L.,et al."A high efficiency broad-band near-infrared Ca2LuZr2Al3O12Cr3+ garnet phosphor for blue LED chips".Journal of Materials Chemistry C 6.18(2018):4967-4976.
Files in This Item:
File Name/Size DocType Version Access License
A high efficiency br(5263KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, L. L.]'s Articles
[Zhang, S.]'s Articles
[Hao, Z. D.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, L. L.]'s Articles
[Zhang, S.]'s Articles
[Hao, Z. D.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, L. L.]'s Articles
[Zhang, S.]'s Articles
[Hao, Z. D.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A high efficiency broad-band near-infrared Ca2.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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