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Enhancing efficiency of crystalline silicon solar cells by the mixture of downshifting CaAlSiN3:Eu2+ and Y2O3:Eu3+ phosphors

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Abstract

Y2O3:Eu3+ (YO) phosphors which have high quantum yield in the range 200–280 nm are mixed with downshifting CaAlSiN3:Eu2+ (CASN) phosphors to improve CASN’s low quantum yield in the wavelength range below 280 nm. The luminescence downshifting ethyl vinyl acetate films with the mixture of YO and CASN phosphors are fabricated and then used to package crystalline silicon solar cells. Experimental results show that the introduction of YO phosphors not only improves the external quantum efficiency of the solar cells in the range below 280 nm but also leads to the better absorption of the light in the range 280–500 nm due to the scattering by YO phosphors. The conversion efficiency of the solar cells with the mixed phosphors can be enhanced from 19.60 to 19.98% after packaging.

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Acknowledgements

The authors thank for the supports from the Natural Science Foundation of Jiangsu (Grant No. BK2011033) and the Primary Research and Development Plan of Jiangsu Province (Grant No. BE2016175).

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The authors declare that no funds, Grants, or other support were received during the preparation of this manuscript.

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  1. School of Electronic Science and Engineering, Southeast University, Jiangsu Province, Nanjing, 210096, People’s Republic of China

    Shaoqiang Huang, Chaogang Lou, Han Diao, Zhaoyong Wang & YunZhen Yin

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Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by [SH], [YY], and [HD]. The first draft of the manuscript was written by [SH] and [CL] commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Chaogang Lou.

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Huang, S., Lou, C., Diao, H. et al. Enhancing efficiency of crystalline silicon solar cells by the mixture of downshifting CaAlSiN3:Eu2+ and Y2O3:Eu3+ phosphors. J Mater Sci: Mater Electron 33, 17678–17687 (2022). https://doi.org/10.1007/s10854-022-08631-w

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