biostudies-literatureJeong SNational Research Foundation of Korea27956-27962https://www.ebi.ac.uk/biostudies/studies/S-EPMC9083496biostudies-literatureUnknown8(49)CuCrO₂ with a crystal structure of delafossite is a promising material as a transparent conducting oxide. It shows unique properties, for example, wide band gap, good chemical stability, and p-type carrier transporting character. The oxide layers with delafossite structure have been suggested as hole transporting materials for organic-inorganic CH₃NH₃PbI₃ perovskite solar cells. In this study, we fabricated inverted (p-i-n) type planar perovskite solar cells with CuCrO₂ nanoparticles synthesized by the hydrothermal method and their films were formed by spin-coating without any further heat treatment. The champion device gave a 13.1% of power conversion efficiency and CuCrO₂ based devices show improved stability in ambient aiRSC advancesp-Type CuCrO₂ particulate films as the hole transporting layer for CH₃NH₃PbI₃ perovskite solar cells.PMC90834962018M3C1B70219942018K1A3A1A320552682016M3D1A1027664Seo SJeong SShin Hfalsep-Type CuCrO₂ particulate films as the hole transporting layer for CH₃NH₃PbI₃ perovskite solar cells.CuCrO₂ with a crystal structure of delafossite is a promising material as a transparent conducting oxide. It shows unique properties, for example, wide band gap, good chemical stability, and p-type carrier transporting character. The oxide layers with delafossite structure have been suggested as hole transporting materials for organic-inorganic CH₃NH₃PbI₃ perovskite solar cells. In this study, we fabricated inverted (p-i-n) type planar perovskite solar cells with CuCrO₂ nanoparticles synthesized by the hydrothermal method and their films were formed by spin-coating without any further heat treatment. The champion device gave a 13.1% of power conversion efficiency and CuCrO₂ based devices show improved stability in ambient ai2018-01-01T00:00:00Z2018 Aug2026-07-14T16:45:10.833Z2025-02-19T03:24:37.404ZS-EPMC90834963554269810.1039/c8ra02556h