journal article·2025-10-10

Residual Solvent Management Enables High-Efficiency Antisolvent-Free Perovskite Solar Cells

Yuli Tao, Zheng Liang, Jiajiu Ye, Chentai Cao, Quan Yang, Shendong Xu, Shuo Song, Bin Gao, Qingsha Liu, Zameer Abbas, Guozhen Liu, Hui Wang, Yanbo Wang, Shangfeng Yang, Xu Pan

ACS Energy Letters· Volume 10· Issue 10
Publisher page

Abstract

During the formation of the perovskite films via the antisolvent-free method, commonly employed in scalable large-area fabrication processes, the solvent tends to lock inside the perovskite layer. The residual N -methyl-2-pyrrolidone (NMP) in the perovskite films hinders the complete reaction between perovskite components, adversely affecting the perovskite crystal crystallinity, crystal orientation, and stability. To address this issue, we introduced propionic acid (PA) into the perovskite solution to facilitate the removal of the NMP. PA weakened the intermolecular interaction between PbI 2 with NMP, increased the volatility of the perovskite solvent system, and thus promoted more efficient NMP evaporation during the perovskite film formation. As a result, the optimized perovskite films exhibit significantly improved crystal quality, and the devices exhibit a champion power conversion efficiency (PCE) of 25.86% in the small-area device. In addition, by enlarging the perovskite film area, we achieved 23.08% PCE for the rigid module (4 cm 2 ) and 16.27% PCE for the flexible module (over 100 cm 2 ), showing them to be well-suited for the commercial manufacturing of perovskite photovoltaics.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Photovoltaic and Energy Conservation Material, Institute of Solid-State Physics (ISSP)

Hefei Institutes of Physical Science (HIPS), Chinese Academy of Sciences

University of Science and Technology of China (USTC)

School of Carbon Neutrality Science and Engineering

Anhui University of Science and Technology

State Key Laboratory of Fine Chemicals, School of Chemistry

Dalian University of Technology

State Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy, Dalian Institute of Chemical Physics, Center of Materials Science and Optoelectronics Engineering

University of Chinese Academy of Sciences

State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, China

Funding

National Key Research and Development Program of China · Hefei Institutes of Physical Science, Chinese Academy of Sciences · National Natural Science Foundation of China · Chinese Academy of Sciences · Anhui Major Industrial Innovation Program · Dreams Foundation of Jianghuai Advance Technology Center

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