Science Publishes Major Research Achievement by Nanchang University’s 

Polymer and Energy Chemistry Team

Recently, the research team led by Professors Yiwang Chen and Xiaotian Hu from the College of Chemistry and Chemical Engineering / Institute of Polymer and Energy Chemistry at Nanchang University has made a significant breakthrough in the field of next-generation thin-film solar cells. Their work, titled “Laser annealing enables rapid, degradation-free ambient processing of perovskite solar modules,” has been published in the top international journal Science. The team has innovatively proposed and realized an air-processed laser annealing technique, providing a key technological pathway for the scalable, low-cost and high-stability fabrication of perovskite photovoltaic materials.

This research was led by Nanchang University in collaboration with several partner institutions. Zhaoyang Chu, a PhD student at Nanchang University, and Baojin Fan, PhD from Jiangxi Normal University, are the co-first authors. Professors Yiwang Chen, Xiaotian Hu, and Dr. Hongxiang Li are the co-corresponding authors.

Perovskite solar cells offer high power-conversion efficiency and solution-processability, but conventional thermal annealing requires long processing times in inert atmospheres. Through in-situ synchrotron characterization, the team revealed for the first time a four-stage degradation mechanism of perovskite films in air, and identified an approximately 123-second “no-degradation window.” Based on this discovery, they developed a high-power blue-laser annealing process capable of achieving rapid, large-area crystallization within about 20 seconds, effectively avoiding water- and oxygen-induced degradation.

This achievement provides a high-throughput, low-energy and environmentally friendly fabrication strategy for perovskite photovoltaics, and is expected to accelerate the transition of high-efficiency photovoltaic materials from laboratory research to industrial application in China. The study was supported by the National Key R&D Program of China, the National Natural Science Foundation of China, and the Jiangxi Provincial Natural Science Foundation.

论文链接：https://www.science.org/doi/10.1126/science.adx9650