Heavyweight Natuer: New progress in the efficiency of perovskite battery modules! Professor Zhang Xiaohong from Suzhou University, an alliance unit, issued a document

Recently, Professor Zhang Xiaohong and Professor Peng Jun from the Functional Nanomaterials and Soft Materials Research Institute (FUNSOM) of Suzhou University, along with Professor Mohammad Khaja Nazeeruddin, Professor Paul J. Dyson, Professor Zhaofu Fei, and Professor Ding Yong from North China Electric Power University, collaborated to publish their research findings on Dopant additive synergy enhancement perovskite solar modules in the journal Nature. Peng Jun is the co first author of the paper, and Zhang Xiaohong is the co corresponding author of the paper.

Perovskite solar cells have become the most advanced new thin film photovoltaic technology due to their rapid improvement in efficiency and stability. However, compared with small laboratory scale batteries, the main bottlenecks hindering the commercialization of large-area perovskite battery modules are low efficiency, poor stability, and low repeatability.

In response to the key scientific issues mentioned above, Zhang Xiaohong, Peng Jun, and their collaborators recently adopted a strategy of using methylammonium chloride (MACl) as a dopant and 1,3-bis (cyanomethyl) imidazole chloride ([Bcmim] Cl) as a Lewis alkaline ionic liquid additive to significantly inhibit the degradation of perovskite precursor solutions, reduce MACl aggregation, and thus prepare high-quality perovskite films with oriented growth and excellent crystallization. A steady-state efficiency of 22.97% was achieved on a perovskite battery module with an aperture area of approximately 27.22cm2, successfully breaking the world record for steady-state efficiency of perovskite modules (National Photovoltaic Industry Metrology and Testing Center, NPVM certification). In addition, under working conditions of 65 degrees Celsius, after 1000 consecutive hours of light aging, the efficiency of the perovskite battery module obtained from the test still maintains 87.19% of the initial value, which fully demonstrates its excellent photothermal stability.

More importantly, this work reveals the intrinsic mechanism of the synergistic effect between dopants and additives, namely proton exchange and multi-point interactions, providing a practical and feasible solution for improving the performance of large-area perovskite battery modules.

Title of the article: Dopant-additive synergism enhances perovskite solar modules

Article website: https://www.nature.com/articles/s41586-024-07228-z

Ding, B., Ding, Y., Peng, J. et al. Dopant-additive synergism enhances perovskite solar modules. Nature 628, 299–305 (2024). https://doi.org/10.1038/s41586-024-07228-z

Source: Yangtze River Delta Laser