Publication date: 7th February 2022
Among different architectures of perovskite solar cells (PSC), the mesoporous carbon-based perovskite solar cell (C-PSC) is an interesting architecture due to the low-cost, easy, and fully printable manufacturing process. One strategy to improve cell performance is modifying the active layer's structural and morphological properties. In this work, the common anatase TiO2 active layer is replaced with the brookite layers. The results show an improvement in open-circuit voltage (VOC) and short-circuit current (JSC) of the brookite-based devices compared with that of anatase-based devices. This is related to the position of the conduction band edge of the brookite compared to anatase. Also, the electron transport and recombination properties of the different layers have been analyzed using EIS.
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