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. 2020 Jul 20;13(3):246–255. doi: 10.1007/s12200-020-1050-y

Possible top cells for next-generation Si-based tandem solar cells

Shuaicheng Lu 1, Chao Chen 1,✉, Jiang Tang 1
PMCID: PMC9743844  PMID: 36641575

Abstract

Si-based solar cells, which have the advantages of high efficiency, low manufacturing costs, and outstanding stability, are dominant in the photovoltaic market. Currently, state-of-the-art Si-based solar cells are approaching the practical limit of efficiency. Constructing Si-based tandem solar cells is one available pathway to break the theoretical efficiency limit of single-junction silicon solar cells. Various top cells have been explored recently in the construction of Si-based tandem devices. Nevertheless, many challenges still stand in the way of extensive commercial application of Si-based tandem solar cells. Herein, we summarize the recent progress of representative Si-based tandem solar cells with different top cells, such as III-V solar cells, wide-bandgap perovskite solar cells, cadmium telluride (CdTe)-related solar cells, Cu(In,Ga)(Se,S)2 (CIGS)-related solar cells, and amorphous silicon (a-Si) solar cells, and we analyze the main bottlenecks for their next steps of development. Subsequently, we suggest several potential candidate top cells for Si-based tandem devices, such as Sb2S3, Se, CdSe, and Cu2O. These materials have great potential for the development of high-performance and low-cost Si-based tandem solar cells in the future.

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Keywords: photovoltaic market, Si-based solar cell, efficiency limit, tandem, top cell

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 61725401 and 61904058), the National Key R&D Program of China (No. 2016YFA0204000), the Innovation Fund of Wuhan National Laboratory for Optoelectronics, National Postdoctoral Program for Innovative Talent (No. BX20190127), China Postdoctoral Science Foundation Project (No. 2019M662623), and the Graduates’ Innovation Fund of Huazhong University of Science and Technology (No. 2019ygscxcy022).

Footnotes

Shuaicheng Lu obtained his Bachelor’s degree from Huazhong University of Science and Technology (HUST), China in 2016. Then he joined Wuhan National Laboratory for Optoelectronics (WNLO) at HUST as a Ph.D. candidate. His research interests include quasi-one-dimensional photovoltaic semiconductors and physical characterization techniques for photovoltaic materials and devices.

Dr. Chao Chen received his B.S. degree from School of Physics, Huazhong University of Science and Technology, China in 2014/06. From 2014/09-2019/02, he studied in Wuhan National Laboratory for Optoelectronics at Huazhong University of Science and Technology as a doctoral candidate and received his Ph.D. degree in 2019/02. Currently, he is a post-doctorin Wuhan National Laboratory for Optoelectronics at Huazhong University of Science and Technology, China. His research interests are thin film solar cells and photodetectors.

Prof. Jiang Tang is a professor at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. He obtained his Ph.D. degree from University of Toronto, Canada at 2010. His research interest is optoelectronic devices including X-ray and infrared detectors, thin film solar cells and light emitting diodes. He has published > 150 papers, filed > 30 patents and received the funding for exceptional young researchers from the National Natural Science Foundation of China.

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