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Near-infrared quantum cutting of Eu2+/Yb3+ codoped chalcohalide glasses

Authors

  • Qiqi Yan,

    1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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  • Jing Ren,

    Corresponding author
    • Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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  • Yu Tong,

    1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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  • Guorong Chen

    1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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†Author to whom correspondence should be addressed. e-mail: jing.ren@ecust.edu.cn

Abstract

Near-infrared (NIR) quantum cutting involving the emission of two NIR photons for each visible photon absorbed is realized from Eu2+/Yb3+ codoped chalcohalide glasses. Excitation, emission and decay spectra are measured to prove the occurrence of cooperative energy transfer (ET) from Eu2+ to Yb3+. The maximum ET efficiency obtained is as high as 85%. The ET from Eu2+ to Yb3+ is followed by dipole-dipole interaction. The possible mechanism of ET is discussed.

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