Abstract
The use of upconversion (UC) materials is an effective strategy for harvesting the near-infrared (NIR) solar photons in perovskite solar cells. Hexagonal β-NaLuF4:Yb,Er submicron prisms were synthesized by a facile solvothermal method. Gd3+ doping is used to enhance the UC emission intensity. We investigated how the concentration of Gd3+ ions affected the morphological evolution, microstructure, and luminescence performance of NaLuF4:Yb,Er and explored the mechanism for improving luminescence at 980 nm excitation. By incorporating the optimized NaLuF4:Yb,Er,Gd into the perovskite solar cells’ (PSCs) hole transport layer, the short-circuit density (Jsc) of UC-PSCs can be enhanced from 19.31 to 21.77 mA cm−2.
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Acknowledgements
The authors gratefully acknowledge the supports from the National Natural Science Foundation of China (Grant No. 11704237, Grant No. U1704145), the Scientific and Technological Research Program of Henan Province (212102311153, 182102410070), and the Henan Provincial Educational Committee program (20A140023, 17B480002).
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Ding, Y., Zhang, X. & Zhao, Y. Improving upconversion efficiency of NaLuF4:Yb,Er by doping Gd3+ and application for perovskite solar cells. J Mater Sci: Mater Electron 33, 23880–23887 (2022). https://doi.org/10.1007/s10854-021-07189-3
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DOI: https://doi.org/10.1007/s10854-021-07189-3