Abstract

Recent research on fabricating scaffold‐type perovskite solar cells on plastic substrates has reported noteworthy progress in replacing the high‐temperature processing of TiO2 scaffolds and compact layers with various low‐temperature processes. Herein, recent progress in the laboratory is reported regarding the development of electrodeposited TiOx compact layers and brookite TiO2 scaffolds, both of which can be processed under 150 °C without greatly sacrificing their photovoltaic performance. Through systematic characterization of device properties and careful optimization of the fabrication conditions, a record‐high 15.76% power conversion efficiency of a plastic TiO2 scaffold‐type perovskite solar cell is demonstrated. In addition, bending durability and preliminary stability tests on this plastic perovskite solar cell show promising results and indicate clear directions for future improvement.

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