Monolithic Lead Halide Perovskite Photoelectrochemical Cell with 9.16% Applied Bias Photon-to-Current Efficiency

Tae Gyun Kim, Jung Hwan Lee, Gayea Hyun, Sungsoon Kim, Do Hyung Chun, Sun Je Lee, Gwangmin Bae, Hyung Suk Oh, Seokwoo Jeon, Jong Hyeok Park

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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/cm2 at 1.23 VRHE (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.

Original languageEnglish
Pages (from-to)320-327
Number of pages8
JournalACS Energy Letters
Issue number1
Publication statusPublished - 2022 Jan 14

Bibliographical note

Funding Information:
J.H.P. acknowledges the support of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2019R1A2C3010479, 2019M1A2A2065612, 2021M3E6A1015823) and Yonsei-KIST Convergence Research Program.

Publisher Copyright:
© 2021 American Chemical Society

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry


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