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Issue 30, 2018
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Luminescence property tuning of Yb3+-Er3+ doped oxysulfide using multiple-band co-excitation

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Abstract

Lanthanide ions have abundant excited-state channels which result in a radiation relaxation process generally accompanied by a non-radiation relaxation process. However, non-radiation relaxation processes will consume the activation energy and reduce the luminescence efficiency of the phosphor. Two lasers with an excitation energy which matched the ground state absorption and excited state absorption of ions were used to excite the phosphors to avoid the non-radiation relaxation process. This approach can achieve the purpose of populating specific states of the lanthanide ions, and furthermore effectively tunes the luminescence intensity and color output of the sample. Results show that the red emission intensity of the sample is significantly improved and this is caused by populating the 4F9/2 level under simultaneous 1510 nm and 980 nm excitation. Then when the 1510 nm and 808 nm co-operate to excite the sample, the green emission obtained increased sharply because the 2H11/2/4S3/2 states were efficiently populated. As a proof-of-concept experiment, this new approach has potential in the applications of solar cells.

Graphical abstract: Luminescence property tuning of Yb3+-Er3+ doped oxysulfide using multiple-band co-excitation

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Publication details

The article was received on 22 Mar 2018, accepted on 23 Apr 2018 and first published on 04 May 2018


Article type: Paper
DOI: 10.1039/C8RA02503G
Citation: RSC Adv., 2018,8, 16557-16565
  • Open access: Creative Commons BY-NC license
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    Luminescence property tuning of Yb3+-Er3+ doped oxysulfide using multiple-band co-excitation

    H. Wanga, X. Yin, M. Xing, Y. Fu, Y. Tian, T. Pang, X. Feng, T. Jiang and X. Luo, RSC Adv., 2018, 8, 16557
    DOI: 10.1039/C8RA02503G

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