Modulation of perovskite degradation with multiple-barrier for light-heat stable perovskite solar cells

• Published in: Nature communications Vol. 14; no. 1; p. 6120
• Main Authors: Zhou, Jing, Liu, Zonghao, Yu, Peng, Tong, Guoqing, Chen, Ruijun, Ono, Luis K, Chen, Rui, Wang, Haixin, Ren, Fumeng, Liu, Sanwan, Wang, Jianan, Lan, Zhigao, Qi, Yabing, Chen, Wei
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group 30.09.2023; Nature Publishing Group UK; Nature Portfolio
• Subjects: Aluminum oxide; Bismuth; Cesium; Commercialization; Decomposition; Decomposition reactions; Degradation; Encapsulation; Metal oxides; Metals; Noble metals; Perovskites; Photovoltaic cells; Photovoltaics; Polymers; Solar cells; Stability; Technology utilization; Thin films; White light
• ISSN: 2041-1723; 2041-1723
• DOI: 10.1038/s41467-023-41856-9

Abstract The long-term stability of perovskite solar cells remains one of the most important challenges for the commercialization of this emerging photovoltaic technology. Here, we adopt a non-noble metal/metal oxide/polymer multiple-barrier to suppress the halide consumption and gaseous perovskite decomposition products release with the chemically inert bismuth electrode and Al 2 O 3 /parylene thin-film encapsulation, as well as the tightly closed system created by the multiple-barrier to jointly suppress the degradation of perovskite solar cells, allowing the corresponding decomposition reactions to reach benign equilibria. The resulting encapsulated formamidinium cesium-based perovskite solar cells with multiple-barrier maintain 90% of their initial efficiencies after continuous operation at 45 °C for 5200 h and 93% of their initial efficiency after continuous operation at 75 °C for 1000 h under 1 sun equivalent white-light LED illumination.