LAPSE:2023.16741
Published Article
LAPSE:2023.16741
Amorphous Silicon Thin Film Deposition for Poly-Si/SiO2 Contact Cells to Minimize Parasitic Absorption in the Near-Infrared Region
March 3, 2023
Abstract
Tunnel oxide passivated contact (TOPCon) solar cells are key emerging devices in the commercial silicon-solar-cell sector. It is essential to have a suitable bottom cell in perovskite/silicon tandem solar cells for commercial use, given that good candidates boost efficiency through increased voltage. This is due to low recombination loss through the use of polysilicon and tunneling oxides. Here, a thin amorphous silicon layer is proposed to reduce parasitic absorption in the near-infrared region (NIR) in TOPCon solar cells, when used as the bottom cell of a tandem solar-cell system. Lifetime measurements and optical microscopy (OM) revealed that modifying both the timing and temperature of the annealing step to crystalize amorphous silicon to polysilicon can improve solar cell performance. For tandem cell applications, absorption in the NIR was compared using a semitransparent perovskite cell as a filter. Taken together, we confirmed the positive results of thin poly-Si, and expect that this will improve the application of perovskite/silicon tandem solar cells.
Tunnel oxide passivated contact (TOPCon) solar cells are key emerging devices in the commercial silicon-solar-cell sector. It is essential to have a suitable bottom cell in perovskite/silicon tandem solar cells for commercial use, given that good candidates boost efficiency through increased voltage. This is due to low recombination loss through the use of polysilicon and tunneling oxides. Here, a thin amorphous silicon layer is proposed to reduce parasitic absorption in the near-infrared region (NIR) in TOPCon solar cells, when used as the bottom cell of a tandem solar-cell system. Lifetime measurements and optical microscopy (OM) revealed that modifying both the timing and temperature of the annealing step to crystalize amorphous silicon to polysilicon can improve solar cell performance. For tandem cell applications, absorption in the NIR was compared using a semitransparent perovskite cell as a filter. Taken together, we confirmed the positive results of thin poly-Si, and expect that this will improve the application of perovskite/silicon tandem solar cells.
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Keywords
amorphous silicon, passivated contact, silicon solar cells, tunnel oxide passivated contact
Subject
Suggested Citation
Lee C, Hyun J, Nam J, Jeong SH, Song H, Bae S, Lee H, Seol J, Kim D, Kang Y, Lee HS. Amorphous Silicon Thin Film Deposition for Poly-Si/SiO2 Contact Cells to Minimize Parasitic Absorption in the Near-Infrared Region. (2023). LAPSE:2023.16741
Author Affiliations
Lee C: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Hyun J: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea [ORCID]
Nam J: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Jeong SH: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Song H: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Bae S: Photovoltaics Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
Lee H: Meiji Renewable Energy Laboratory, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan
Seol J: Hanwha Q CELLS GmbH, Sonnenallee 17-21, Bitterfeld-Wolfen OT Thalheim, 06766 Bitterfeld-Wolfen, Germany
Kim D: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Kang Y: KU-KIST Graduate School of Energy and Environment, Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Lee HS: KU-KIST Graduate School of Energy and Environment, Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Hyun J: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea [ORCID]
Nam J: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Jeong SH: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Song H: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Bae S: Photovoltaics Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
Lee H: Meiji Renewable Energy Laboratory, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan
Seol J: Hanwha Q CELLS GmbH, Sonnenallee 17-21, Bitterfeld-Wolfen OT Thalheim, 06766 Bitterfeld-Wolfen, Germany
Kim D: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Kang Y: KU-KIST Graduate School of Energy and Environment, Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Lee HS: KU-KIST Graduate School of Energy and Environment, Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Journal Name
Energies
Volume
14
Issue
24
First Page
8199
Year
2021
Publication Date
2021-12-07
ISSN
1996-1073
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PII: en14248199, Publication Type: Journal Article
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LAPSE:2023.16741
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https://doi.org/10.3390/en14248199
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