Highly passivated TOPCon bottom cells for perovskite/silicon tandem solar cells

Zetao Ding, Chenxia Kan, Shengguo Jiang, Meili Zhang, Hongyu Zhang, Wei Liu, Mingdun Liao, Zhenhai Yang, Pengjie Hang, Yuheng Zeng (), Xuegong Yu () and Jichun Ye ()
Additional contact information
Zetao Ding: Chinese Academy of Sciences
Chenxia Kan: Zhejiang University
Shengguo Jiang: Chinese Academy of Sciences
Meili Zhang: Chinese Academy of Sciences
Hongyu Zhang: Chinese Academy of Sciences
Wei Liu: Chinese Academy of Sciences
Mingdun Liao: Chinese Academy of Sciences
Zhenhai Yang: Chinese Academy of Sciences
Pengjie Hang: Zhejiang University
Yuheng Zeng: Chinese Academy of Sciences
Xuegong Yu: Zhejiang University
Jichun Ye: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Tunnel oxide passivated contact (TOPCon) silicon solar cells are rising as a competitive photovoltaic technology, seamlessly blending high efficiency with cost-effectiveness and mass production capabilities. However, the numerous defects from the fragile silicon oxide/c-Si interface and the low field-effect passivation due to the inadequate boron in-diffusion in p-type polycrystalline silicon (poly-Si) passivated contact reduce their open-circuit voltages (VOCs), impeding their widespread application in the promising perovskite/silicon tandem solar cells (TSCs) that hold a potential to break 30% module efficiency. To address this, we have developed a highly passivated p-type TOPCon structure by optimizing the oxidation conditions, boron in-diffusion, and aluminium oxide hydrogenation, thus pronouncedly improving the implied VOC (iVOC) of symmetric samples with p-type TOPCon structures on both sides to 715 mV and the VOC of completed double-sided TOPCon bottom cells to 710 mV. Consequently, integrating with perovskite top cells, our proof of concept of 1 cm2 n-i-p perovskite/silicon TSCs exhibit VOCs exceeding 1.9 V and a high efficiency of 28.20% (certified 27.3%), which paves a way for TOPCon cells in the commercialization of future tandems.

Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-52309-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52309-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-52309-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().