Perovskite/silicon tandem solar cell: surface recombination analysis

LiYiFei Xv; YiZhou He; HuiYi Zheng; XiaoWei Guo

doi:10.1117/12.2605471

13 December 2021 Perovskite/silicon tandem solar cell: surface recombination analysis

LiYiFei Xv, YiZhou He, HuiYi Zheng, XiaoWei Guo

Proceedings Volume 12074, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Novel Optoelectronic Functional Materials and Devices; 1207406 (2021) https://doi.org/10.1117/12.2605471
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China

Abstract

Tandem devices combining perovskite and silicon solar cells are promising candidates to achieve power conversion efficiencies above 30% at reasonable costs. However, it is rarely reported about the effect of surface recombination on tandem solar cells. In this paper, we analyze the influence of surface recombination on the performance of tandem cells. Simulations show surface recombination can reduce the cell’s open-circuit voltage (Voc), short-circuit current (Jsc), and efficiency. The efficiency of the tandem cell decreases with the increase of the surface recombination rate on the sub cells. The maximum efficiency of the tandem cell without surface recombination is 25.81%. When the recombination velocity of the silicon sub cell increases from 0 to 10⁵ cm/s, the overall efficiency decreases to 13.96%. When the same surface recombination velocity is added to perovskite sub cell, the overall efficiency is 13.89%. When both the surface recombination velocity of perovskite and silicon are 10⁵ cm/s, the efficiency of the tandem cell decreases to 13.42%. Therefore, the performances of the tandem cell are similar in the cases of single sub cell with surface recombination and both sub cells with surface recombination.

Citation Download Citation

LiYiFei Xv, YiZhou He, HuiYi Zheng, and XiaoWei Guo "Perovskite/silicon tandem solar cell: surface recombination analysis", Proc. SPIE 12074, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Novel Optoelectronic Functional Materials and Devices, 1207406 (13 December 2021); https://doi.org/10.1117/12.2605471

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KEYWORDS

Silicon

Perovskite

Solar cells

Tandem solar cells

Absorption

Diffusion

Doping

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