Chinese Optics Letters, 2019, 17 (9): 091601, Published Online: Aug. 19, 2019  

Efficient up-conversion Yb3+, Er3+ co-doped Na5Lu9F32 single crystal for photovoltaic application under solar cell spectrum excitation Download: 975次

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

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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