Zhao Xiaoming, Zhang Peikun, Liu Tianjun, Tian Bingkun, Jiang Ying, Zhang Jinping, Tang Yajing, Li Bowen, Xue Minmin, Zhang Wei, Zhang Zhuhua, Guo Wanlin
Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education, State Key Laboratory of Mechanics and Control for Aerospace Structures, and Institute for Frontier Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0HE, UK.
Science. 2024 Jul 26;385(6707):433-438. doi: 10.1126/science.adn9453. Epub 2024 Jul 25.
The ever-increasing power conversion efficiency of perovskite solar cells has illuminated the future of the photovoltaic industry, but the development of commercial devices is hampered by their poor stability. In this study, we report a scalable stabilization method using vapor-phase fluoride treatment, which achieves 18.1%-efficient solar modules (228 square centimeters) with accelerated aging-projected lifetimes (time to 80% of efficiency remaining) of 43,000 ± 9000 hours under 1-sun illumination at 30°C. The high stability results from vapor-enabled homogeneous fluorine passivation over large-area perovskite surfaces, suppressing defect formation energy and ion diffusion. The extracted degradation activation energy of 0.61 electron volts for solar modules is comparable to that of most reported stable cells, which indicates that modules are not inherently less stable than cells and closes the cell-to-module stability gap.
钙钛矿太阳能电池不断提高的功率转换效率照亮了光伏产业的未来，但商业设备的发展却因其稳定性差而受到阻碍。在本研究中，我们报告了一种使用气相氟化物处理的可扩展稳定化方法，该方法实现了效率为18.1%的太阳能模块（228平方厘米），在30°C的1个太阳光照下，加速老化预测寿命（效率降至剩余80%的时间）为43,000±9000小时。高稳定性源于气相使大面积钙钛矿表面实现均匀氟钝化，抑制了缺陷形成能和离子扩散。提取的太阳能模块降解活化能为0.61电子伏特，与大多数报道的稳定电池相当，这表明模块并非本质上比电池稳定性差，缩小了电池与模块之间的稳定性差距。
