Details
| Original language | English |
|---|---|
| Article number | 2300919 |
| Number of pages | 9 |
| Journal | Solar RRL |
| Volume | 8 |
| Issue number | 12 |
| Publication status | Published - 27 Jun 2024 |
Abstract
In this article, different in situ grown plasma-enhanced chemical vapor deposition (PECVD)-grown interfacial oxides for n-type polysilicon-passivating contacts are investigated. Herein, SiOx(Ny)/n-type amorphous silicon stacks created from either N2O plasma or O2 plasma are applied to POLy-silicon on Oxide interdigitated back-contact (POLO IBC) solar cells using the structured deposition process through a glass mask to create the IBC layout. The impact of plasma exposure time for interfacial oxide growth on solar cell efficiencies is experimentally determined. In the POLO IBC cell results, it is shown that the PECVD oxides SiOxNy and SiOx with optimized plasma exposure time give similar maximum efficiencies of 23.8% and 23.7%, respectively. In these data, the feasibility to deposit a high-quality in situ PECVD interfacial SiOx(Ny) layers for surface passivation and current transport of passivated contacts at the same time is demonstrated. For the SiOx/n-type polysilicon stack, it is found that both plasma exposure time for interfacial oxide growth and polysilicon anneal temperature variations can lead to similar optimum of solar cell efficiencies. The current open-circuit voltage losses due to metallization for the solar cells are analyzed and a realistic efficiency of 25.22% is calculated to achieve optimized POLO IBC solar cells applying the synergistic efficiency gain analysis on Quokka3 simulations.
Keywords
- interfacial oxides, n-type polysilicons, plasma-enhanced chemical vapor depositions (PECVDs), POLy-silicon on Oxide interdigitated back contacts (POLO IBCs), solar cells
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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In: Solar RRL, Vol. 8, No. 12, 2300919, 27.06.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Plasma-Enhanced Chemical-Vapor-Deposited SiOx(Ny)/n-type Polysilicon-on-Oxide-Passivating Contacts in Industrial Back-Contact Si Solar Cells
AU - Mertens, Verena
AU - Dorn, Silke
AU - Langlois, Jonathan
AU - Stöhr, Maximilian
AU - Larionova, Yevgeniya
AU - Veurman, Welmoed
AU - Brendel, Rolf
AU - Ambrosius, Norbert
AU - Vogt, Aaron
AU - Pernau, Thomas
AU - Haverkamp, Helge
AU - Dullweber, Thorsten
N1 - Publisher Copyright: © 2024 Wiley-VCH GmbH.
PY - 2024/6/27
Y1 - 2024/6/27
N2 - In this article, different in situ grown plasma-enhanced chemical vapor deposition (PECVD)-grown interfacial oxides for n-type polysilicon-passivating contacts are investigated. Herein, SiOx(Ny)/n-type amorphous silicon stacks created from either N2O plasma or O2 plasma are applied to POLy-silicon on Oxide interdigitated back-contact (POLO IBC) solar cells using the structured deposition process through a glass mask to create the IBC layout. The impact of plasma exposure time for interfacial oxide growth on solar cell efficiencies is experimentally determined. In the POLO IBC cell results, it is shown that the PECVD oxides SiOxNy and SiOx with optimized plasma exposure time give similar maximum efficiencies of 23.8% and 23.7%, respectively. In these data, the feasibility to deposit a high-quality in situ PECVD interfacial SiOx(Ny) layers for surface passivation and current transport of passivated contacts at the same time is demonstrated. For the SiOx/n-type polysilicon stack, it is found that both plasma exposure time for interfacial oxide growth and polysilicon anneal temperature variations can lead to similar optimum of solar cell efficiencies. The current open-circuit voltage losses due to metallization for the solar cells are analyzed and a realistic efficiency of 25.22% is calculated to achieve optimized POLO IBC solar cells applying the synergistic efficiency gain analysis on Quokka3 simulations.
AB - In this article, different in situ grown plasma-enhanced chemical vapor deposition (PECVD)-grown interfacial oxides for n-type polysilicon-passivating contacts are investigated. Herein, SiOx(Ny)/n-type amorphous silicon stacks created from either N2O plasma or O2 plasma are applied to POLy-silicon on Oxide interdigitated back-contact (POLO IBC) solar cells using the structured deposition process through a glass mask to create the IBC layout. The impact of plasma exposure time for interfacial oxide growth on solar cell efficiencies is experimentally determined. In the POLO IBC cell results, it is shown that the PECVD oxides SiOxNy and SiOx with optimized plasma exposure time give similar maximum efficiencies of 23.8% and 23.7%, respectively. In these data, the feasibility to deposit a high-quality in situ PECVD interfacial SiOx(Ny) layers for surface passivation and current transport of passivated contacts at the same time is demonstrated. For the SiOx/n-type polysilicon stack, it is found that both plasma exposure time for interfacial oxide growth and polysilicon anneal temperature variations can lead to similar optimum of solar cell efficiencies. The current open-circuit voltage losses due to metallization for the solar cells are analyzed and a realistic efficiency of 25.22% is calculated to achieve optimized POLO IBC solar cells applying the synergistic efficiency gain analysis on Quokka3 simulations.
KW - interfacial oxides
KW - n-type polysilicons
KW - plasma-enhanced chemical vapor depositions (PECVDs)
KW - POLy-silicon on Oxide interdigitated back contacts (POLO IBCs)
KW - solar cells
UR - http://www.scopus.com/inward/record.url?scp=85195875706&partnerID=8YFLogxK
U2 - 10.1002/solr.202300919
DO - 10.1002/solr.202300919
M3 - Article
AN - SCOPUS:85195875706
VL - 8
JO - Solar RRL
JF - Solar RRL
IS - 12
M1 - 2300919
ER -