Citation: Hua Peng, Dong Hou, Jing-Hua Guo, Yuan Yu, Wei Qin. Interfacial spin polarization improving photovoltaic performance in perovskite solar cells[J]. Chinese Chemical Letters, ;2026, 37(7): 111081. doi: 10.1016/j.cclet.2025.111081 shu

Interfacial spin polarization improving photovoltaic performance in perovskite solar cells

Hua Peng ^{a, *,} ,
Dong Hou ^a ,
Jing-Hua Guo ^a ,
Yuan Yu ^{b, *,} ,
Wei Qin ^{b, *,}

a.
School of Physics and Technology, University of Jinan, Ji’nan 250022, China
b.
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100, China

sps_pengh@ujn.edu.cn

dtyuyuan@126.com

wqin@sdu.edu.cn

Received Date: 10 January 2025
Revised Date: 6 March 2025
Accepted Date: 12 March 2025
Available Online: 12 March 2025

Figures(4)

perovskite solar cells have attained exceptional power conversion efficiencies, offering a robust material foundation and device design process for the future of photovoltaics. In addition to optimizing perovskite materials for charge-related properties, it is essential to consider spin-related characteristics, as these could prove to be a pivotal factor in enhancing the photoelectric conversion efficiency. In this study, perovskite solar cells featuring various perovskite/transport layer interfaces were engineered to investigate the interfacial spin polarization’s impact on charge extraction. The intensity of charge extraction correlates directly with the interfacial spin polarization. By applying an external electric field, the interfacial spin polarization can be further amplified, thereby enhancing charge extraction. This amplified charge extraction, resulting from increased interfacial spin polarization, can substantially boost the overall photocurrent, thus enabling a high power conversion efficiency.
- Perovskites,
- Solar cells,
- Interface,
- Spin polarization,
- Charge extraction
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