Encapsulation of UV Glue, Hydrophobicity of Binder and Carbon Electrode Enhance the Stability of Organic–Inorganic Hybrid Perovskite Solar Cells up to 5 Years. Issue 11 (16th September 2020)

• Record Type: Journal Article
• Authors: Yin, Jie; Cui, Jiawen; Zhou, Huawei; Cui, Shuting; Wang, Chen; Guo, Junxue; Wei, Jiazhen; Zhang, Xianxi
• Is Part Of: Energy technology. Volume 8:Issue 11(2020:Nov.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-09-16
• Subjects: carbon electrodes -- organic–inorganic hybrid perovskite solar cells -- stability; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.202000513
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : The long‐term stability of organic–inorganic hybrid perovskite (OIHP) is very important for its industrial application. However, how long the encapsulated perovskite can remain stable under ambient conditions is completely unclear. Herein, the performance and stability of OIHP after 5 years under ambient conditions us investigated. The result of UV–vis absorption spectra shows that encapsulating device by UV glue can retain the absorption characteristics and color of CH3 NH3 PbI3 perovskite after 5 years. In addition, the results of contact angle and immersing in water indicate that the hydrophobic effect of graphite/conductive carbon and tetrafluoroethylene polymer binders can prevent the invasion of external water and air. The photoelectrochemical results show that the performance of the resistance, built‐in potential, and power conversion efficiency of the devices after 5 years can be comparable with that of initial devices. Finally, cross‐sectional scanning electron microscopy (SEM) and energy‐dispersive spectroscopy (EDS) demonstrate that CH3 NH3 PbI3 /TiO2 heterojunction still exists in the perovskite solar cells after 5 years. Abstract : Herein, the performance and stability of organic–inorganic hybrid perovskites after 5 years under ambient conditions is investigated. The results show that the performance of absorption characteristic, the resistance, built‐in potential, and power conversion efficiency of the devices based on UV glue, hydrophobic carbon electrode (graphite/conductive carbon and tetrafluoroethylene polymer binders) can be comparable with that of initial devices.