Commercial Solar Cells With Graphene Oxide as the Passivation Film

The negative fixed charge density contributed by graphene oxide is estimated as high as 6 x 10 12  cm −2 . Graphene oxide is therefore a promising candidate for Si solar cell passivation. However, the high-temperature steps for manufacturing commercial Si solar cells would change the composition of...

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Bibliographic Details
Published in:IEEE journal of photovoltaics 2021-07, Vol.11 (4), p.873-877
Main Authors: Huang, Yu-Jie, Yu, Cheng-Yeh, Jiang, Zih-Kang, Chen, Yi-Cin, Sun, Ching-Pao, Utila, Masauko Henry, Yeh, Wang-Chi, Lin, Chu-Hsuan
Format: Article
Language:English
Subjects:
Charge density
Fixed charge
Graphene
graphene oxide
High temperature
Passivation
Passivity
Photovoltaic cells
Si solar cells
Silicon
Solar cells
Substrates
Surface treatment
Temperature measurement
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Summary:The negative fixed charge density contributed by graphene oxide is estimated as high as 6 x 10 12  cm −2 . Graphene oxide is therefore a promising candidate for Si solar cell passivation. However, the high-temperature steps for manufacturing commercial Si solar cells would change the composition of graphene oxide. Therefore, graphene oxide cannot be directly adopted by commercial PERC manufacturers with the high-temperature firing step after the rear passivation step. To suppress the high-temperature degradation, we have deposited the graphene oxide on the rear surface of commercial IBC cells directly, and V oc , J sc and efficiency of the cell all improved after 100 μL graphene oxide deposition. Graphene oxide can be adopted as the passivation material of commercial cells as long as the high-temperature process on graphene oxide can be suppressed.
ISSN:2156-3381
2156-3403
DOI:10.1109/JPHOTOV.2021.3075869