title: Highly efficient photoelectrochemical water splitting by a hybrid tandem perovskite solar cell.
abstract: Herein, we show that graphene can be fully utilized to function as an electrocatalyst in highly efficient photoelectrochemical water splitting. Combining a solution-processed organic photovoltaic and the state-of-the-art perovskite solar cell in a tandem architecture yields a stable short-circuit water splitting photocurrent of ∼7.25 mA cm(-2) under 1 sun illumination. The ∼7.25 mA cm(-2) photocurrent corresponds to a solar-to-hydrogen efficiency of 9.02%, which is the highest efficiency yet reported for water splitting based on a hybrid tandem perovskite solar cell.
authors.affiliation: Department of Information Display, Kyung Hee University, Seoul, Republic of Korea. jjang@khu.ac.kr.
authors.forename: Abd Rashid
authors.initials: AR
authors.lastname: Bin
authors.forename: Mohd
authors.initials: M
authors.lastname: Yusoff
authors.forename: Jin
authors.initials: J
authors.lastname: Jang