Enhanced broadband excited upconversion luminescence in Ho-doped glasses by codoping with bismuth

Beibei Xu, Gongxun Bai, Juechen Wang, Qiangbing Guo, Dezhi Tan, Weibo Chen, Xiaofeng Liu, Shifeng Zhou, Jianhua Hao, Jianrong Qiu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


We report enhanced green and red upconversion (UC) luminescence in Ho 3+-doped oxyfluoride germanate glass by introducing bismuth near-infrared active centers as sensitizers. The UC excitation bands at 750 and 970 nm show a full width at half-maximum of 20 and 45 nm, respectively. Energy transfer from sensitizers, the excited-state absorption, and phonon-coupled absorption of Ho3+jointly contribute to the enhanced UC luminescence. Our approach provides an efficient methodology to broaden the excitation bandwidth of UC luminescent materials, which may have the potential for promising application in solar cells.
Original languageEnglish
Pages (from-to)3022-3025
Number of pages4
JournalOptics Letters
Issue number10
Publication statusPublished - 15 May 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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