김태균 이정환 현가애 김성순 전도형 이선제 배광민 Oh, Hyung Suk 전석우 박종혁 2024-01-19T13:02:23Z 2024-01-19T13:02:23Z 2022-01-10 2022-01 2380-8195 https://pubs.kist.re.kr/handle/201004/115893 Although lead halide perovskite (LHP) solar cells can be externally applied to water electrolysis for solar-to-hydrogen conversion, an LHP device with a monolithic configuration for photoelectrochemical (PEC) cells is more economically ideal for viable hydrogen production. To this end, the hydrogen evolution reaction (HER)/oxygen evolution reaction (OER) catalyst attachment on the LHP solar cell terminals is a governing factor for high efficiency and stable operation. Herein, we report monolithic PEC cells with a double-cation perovskite solar cell connected to a robust 3D OER catalyst using conductive carbon powders for minimal ohmic contact loss. The monolithic PEC cell exhibits 0.56 V onset potential and a maximum photocurrent density of 24.26 mA/cm(2) at 1.23 V-RHE (reversible hydrogen electrode (RHE)) with a 9.16% applied bias photon-to-current efficiency. This result will stimulate commercial-level application of LHP-based PEC cells for solar water splitting as well as solar-to-fuel conversion with high efficiency. English AMER CHEMICAL SOC Monolithic Lead Halide Perovskite Photoelectrochemical Cell with 9.16% Applied Bias Photon-to-Current Efficiency Article 10.1021/acsenergylett.1c02326 1 ACS ENERGY LETTERS, v.7, no.1, pp.320 - 327 ACS ENERGY LETTERS 7 1 320 327 N scie scopus 000734266900001 2-s2.0-85121983671 Chemistry, Physical Electrochemistry Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Science & Technology - Other Topics Materials Science Article EXCITON BINDING-ENERGY SPLITTING RECENT PROGRESS HYDROGEN-PRODUCTION EFFECTIVE MASSES LIGHT-SOAKING PERFORMANCE Photoelectrochemical Cell OER HER Perovskite