CuGaO<sub>2</sub> : A Promising Inorganic Hole-Transporting Material for Highly Efficient and Stable Perovskite Solar Cells.

Zhang, Hua; Wang, Huan; Chen, Wei; Jen, Alex K-Y · Adv Mater · 2017

basic_science · Level V

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Abstract

The p-type inorganic semiconductor CuGaO<sub>2</sub> as a hole-transporting layer (HTL) in perovskite solar cells (PSCs) provides higher carrier mobility, better-energy level matching, and superior stability, as well as low-temperature processing technique. Compared to organic HTL, a very competitive PCE of 18.51% with long-term stability is achieved. This indicates that CuGaO<sub>2</sub> is a promising HTL for efficient and stable PSCs.