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  • Received: May. 6, 2019

    Accepted: Jun. 6, 2019

    Posted: Aug. 19, 2019

    Published Online: Aug. 19, 2019

    The Author Email: Haiping Xia (hpxcm@nbu.edu.cn), Hongwei Song (Songhw@jlu.edu.cn)

    DOI: 10.3788/COL201917.091601

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    Xiong Zhou, Hui Wang, Haiping Xia, Hongwei Song, Xu Chen, Jianxu Hu, Baojiu Chen. Efficient up-conversion Yb3+, Er3+ co-doped Na5Lu9F32 single crystal for photovoltaic application under solar cell spectrum excitation[J]. Chinese Optics Letters, 2019, 17(9): 091601

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Chinese Optics Letters, Vol. 17, Issue 9, 091601 (2019)

Efficient up-conversion Yb3+, Er3+ co-doped Na5Lu9F32 single crystal for photovoltaic application under solar cell spectrum excitation

Xiong Zhou1, Hui Wang1, Haiping Xia1,*, Hongwei Song2,**, Xu Chen2, Jianxu Hu1, and Baojiu Chen3

Author Affiliations

  • 1Key Laboratory of Photo-Electronic Materials, Ningbo University, Ningbo 315211, China
  • 2State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering and College of Physics, Jilin University, Changchun 130012, China
  • 3Department of Physics, Dalian Maritime University, Dalian 116026, China

Abstract

Yb3+/Er3+ co-doped Na5Lu9F32 single crystals used as a spectral up-converter to improve the power conversion efficiency of perovskite solar cells are prepared via an improved Bridgman approach. Green and red up-conversion (UC) emissions under the excitation of near-infrared (NIR) bands of 900–1000 nm and 1400–1600 nm can be observed. The effectiveness of the prepared materials as a spectral converter is verified by the enhancement of power conversion efficiency of perovskite solar cells. The sample with a UC layer is 15.5% more efficient in converting sunlight to electricity compared to the UC layer-free sample due to the absorption of sunlight in the NIR range. The results suggest the synthesized Yb3+/Er3+ co-doped Na5Lu9F32 single crystals are suitable for enhancing the performance of perovskite solar cells.