Barrier-Free Cathode Contacts for High-Efficiency Inverted Carbon-Perovskite Solar Cells

Li H, Peng W, Zhang K, He Y, He Q, Liu M, Liu Z, Shen K, Wu F, Qiu S, Tian J, Du T, Brabec C, Mai Y, Guo F (2026)

Publication Type: Journal article

Publication year: 2026

Journal

DOI: 10.1002/aenm.71216

Abstract

Compared to vacuum-deposited electrodes of metal or metal oxides, printable carbon electrodes (CEs) offer a more sustainable approach toward commercialization of perovskite solar cells (PSCs). Significant attention has been paid to the N-i-P carbon-based PSCs (C-PSCs), owing to the favorable alignment of CEs work-functions with perovskite valence band. In contrast, the P-i-N structured PSCs employing carbon as electron-collecting contact has been rarely explored, primarily due to the presence of large interfacial barrier. Here, we eliminate the stubborn interfacial barriers by means of increasing free carrier density of electron transport layer (ETL) in conjugation with the insertion of a non-conducting metal thin layer between ETL and CEs. The synergistic strategies enable the preparation of efficient P-i-N C-PSCs with a record efficiency of 22.79% (certified 21.34%). The detailed life cycle cost and assessment reveal that our P-i-N C-PSCs outperform metal-electrode counterparts in both cost-effectiveness and environmental impact.

Authors with CRIS profile

Involved external institutions

Jinan University (JNU) / 暨南大学 China (CN) Taiyuan University of Technology China (CN)

How to cite

APA:

Li, H., Peng, W., Zhang, K., He, Y., He, Q., Liu, M.,... Guo, F. (2026). Barrier-Free Cathode Contacts for High-Efficiency Inverted Carbon-Perovskite Solar Cells. Advanced Energy Materials. https://doi.org/10.1002/aenm.71216

MLA:

Li, Hongbing, et al. "Barrier-Free Cathode Contacts for High-Efficiency Inverted Carbon-Perovskite Solar Cells." Advanced Energy Materials (2026).

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