Near-Infrared Quantum Cutting via Downconversion Energy Transfers in Ho3+/Yb3+ Codoped Tellurite Glass Ceramics

The different concentration of Ho3+/Yb3+ codoped tellurite glasses were prepared by high‐temperature melting‐quenching method. On excitation of Ho3+ ions with blue photon at 449 nm as well as ultraviolet (UV) photon at 360 nm, the near infrared emission at 977 nm from Yb3+ and 981, 1020 nm from Ho3+...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 97; no. 1; pp. 179 - 184
Main Authors Zhou, Xianju, Wang, Yongjie, Zhao, Xiaoqi, Li, Li, Wang, Zhongqing, Li, Qingxu
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 01.01.2014
Subjects
Ceramics
Cross relaxation
Cutting
Emission
Energy transfer
Glass ceramics
Infrared
Photons
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Summary:The different concentration of Ho3+/Yb3+ codoped tellurite glasses were prepared by high‐temperature melting‐quenching method. On excitation of Ho3+ ions with blue photon at 449 nm as well as ultraviolet (UV) photon at 360 nm, the near infrared emission at 977 nm from Yb3+ and 981, 1020 nm from Ho3+, which could be absorbed by silicon and enhance the efficiency of the silicon‐based solar cell, were observed. The energy‐transfer process of Ho3+ and Yb3+ ions and involved mechanism have been investigated and discussed. The first‐order energy transfer (ET) through cross relaxation and a back ET from Yb3+ to Ho3+ occurred in the near‐infrared quantum cutting (NIR QC) system are proposed and verified. The NIR quantum efficiency achieved 166% when Yb3+ doping concentration is 20 mol%.
Bibliography:Key Project of Chinese Ministry of Education - No. 211154
istex:1197BAFA684ED67E7B1CC5231DBD63E421E05242
ArticleID:JACE12679
National Natural Science Foundation of China - No. 10704090
ark:/67375/WNG-Q76CM67L-6
Natural Science Foundation Project of Chongqing - No. KJ110532; No. CST 2012JJA90019; No. CSTC2011jjA50016
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.12679