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
Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST), 430074, Wuhan, China.
Optics Valley Laboratory, Wuhan, Hubei, 430074, China.
Nat Commun. 2023 Sep 30;14(1):6120. doi: 10.1038/s41467-023-41856-9.
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 AlO/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.
钙钛矿太阳能电池的长期稳定性仍然是这种新兴光伏技术商业化面临的最重要挑战之一。在这里，我们采用非贵金属/金属氧化物/聚合物多重阻挡层，通过化学惰性的铋电极和AlO/聚对二甲苯薄膜封装来抑制卤化物消耗和气态钙钛矿分解产物的释放，以及由多重阻挡层形成的紧密封闭系统来共同抑制钙钛矿太阳能电池的降解，使相应的分解反应达到良性平衡。所得的具有多重阻挡层的封装甲脒铯基钙钛矿太阳能电池在相当于1个太阳的白光LED照明下，在45 °C连续运行5200 h后保持其初始效率的90%，在75 °C连续运行1000 h后保持其初始效率的93%。
