Abstract
The texture structure of the multi-crystalline silicon (mc-Si) pyramid was realized by a combination of acidic and alkaline etching. The results showed that the structure of the corrosion pits could be first obtained on the mc-Si surface by acid etching, and the subsequent alkaline etching could further transform the pits into a pyramid structure. The best solar cell obtained based on the textured structure showed superior photovoltaic property, and its photovoltaic conversion efficiency reached 18.17%, which was significantly higher than that of solar cell without texture structure. The improvement in efficiency was mainly owing to the light-trapping effect of texture structure, which was confirmed by the external quantum efficiency measurement. This work offers a simple way to prepare low-cost mc-Si solar cells with high performance.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos. 51976081, 51406069), the China Postdoctoral Science Foundation Special Project (Nos. 2016T90426; 2015M581733), the Jiangsu Planned Projects for Postdoctoral Research Funds (No. 1501107B) and the Training Project of Jiangsu University Youth Backbone Teacher.
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Qiao, F., Liang, Q., Jiang, Y. et al. Fabrication of multi-crystalline silicon pyramid structure and improvement in its photovoltaic performance. J Mater Sci 55, 680–687 (2020). https://doi.org/10.1007/s10853-019-04072-9
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DOI: https://doi.org/10.1007/s10853-019-04072-9