Novel Nano‐Pyramid/Polish Hybrid Morphology Designed for High‐Efficiency Passivated Contact Solar Cells

Novel Nano‐Pyramid/Polish Hybrid Morphology Designed for High‐Efficiency Passivated Contact Solar Cells

Progress in Photovoltaics: Research and Applications

10.1002/pip.70002

https://doi.org/10.1002/pip.70002

Baochen Liao, Sheng Ma, Reuben J. Yeo, Xinyuan Wu, Shuai Zou, Xiaodong Su, Wenzhong Shen, Guoqiang Xing, Bram Hoex

Additive, Nano-pyramid, Nano-pyramid/polish hybrid morphology, Secondary textured, TOPCon

17 June 2025

Liao, B., Ma, S., Yeo, R. J., Wu, X., Zou, S., Su, X., Shen, W., Xing, G., & Hoex, B. (2025). Novel Nano‐Pyramid/Polish Hybrid Morphology Designed for High‐Efficiency Passivated Contact Solar Cells. Progress in Photovoltaics: Research and Applications, 33(9), 989–998. Portico. https://doi.org/10.1002/pip.70002

ABSTRACTIn photovoltaic applications, the rear surface morphology of tunnel oxide passivated contact (TOPCon) solar cells plays a critical role in their performance. However, traditional textured and polished surface morphologies both have limitations. This study introduces a hybrid nano‐pyramid/polish morphology, combining a nano‐pyramid structure on a polished surface. This new design aims to capitalize on the advantages of both textured and polished surfaces, achieving an optimal balance for TOPCon performance. The balance is achieved through an additional chemical solution treatment process. When applied to TOPCon solar cells, the hybrid structure outperforms both secondary‐textured and polished morphologies in terms of optical absorption, passivation, and contact performance. The nano‐pyramid/polish hybrid achieves a superior balance between light trapping, passivation, and contact quality. Furthermore, the study investigates the impact of rear surface morphology on film blistering, revealing that rougher surfaces are less prone to blistering. This is likely due to more favorable stress distribution in the SiOx/poly‐Si stack, enhancing mechanical stability. These findings demonstrate the compatibility of the hybrid nano‐pyramid/polish morphology with TOPCon solar cells, offering a promising pathway to enhance efficiency. The insights gained may also benefit the development of other high‐performance solar cell technologies, such as heterojunction (HJT) and silicon/perovskite tandem solar cells, advancing industrial photovoltaic applications.

Publisher Copyright

This work was supported by the funding support of the Jiangsu Specially-Appointed Professor grant (Grant No. 06210061007), the Major State Basic Research Development Program of China (Grant No. 2022YFB4200101), Inner Mongolia Science and Technology Project (Grant No. 2022JBGS0036), Yibin Science and Technology Project and the Research Funding for High-level Talents of Nantong University (No. 03083035).

This is the peer reviewed version of the following article: Liao, B., Ma, S., Yeo, R. J., Wu, X., Zou, S., Su, X., Shen, W., Xing, G., & Hoex, B. (2025). Novel Nano‐Pyramid/Polish Hybrid Morphology Designed for High‐Efficiency Passivated Contact Solar Cells. Progress in Photovoltaics: Research and Applications, 33(9), 989–998. Portico. https://doi.org/10.1002/pip.70002 , which has been published in final form at https://doi.org/10.1002/pip.70002. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

https://oar.a-star.edu.sg/communities-collections/articles/22631

1062-7995
1099-159X

Institute of Materials Research and Engineering