Enhanced photoelectrochemical hydrogen production efficiency of MoS2-Si heterojunction

Abeer A. Alarawi, Vinoth Ramalingam, Hui-Chun Fu, Purushothaman Varadhan, Rusen Yang, Jr-Hau He

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


Photoelectrochemical water splitting is one of the viable approaches to produce clean hydrogen energy from water. Herein, we report MoS2/Si-heterojunction (HJ) photocathode for PEC H2 production. The MoS2/Si-HJ photocathode exhibits exceptional PEC H2 production performance with a maximum photocurrent density of 36.33 mA/cm2, open circuit potential of 0.5 V vs. RHE and achieves improved long-term stability up to 10 h of reaction time. The photocurrent density achieved by MoS2/Si-HJ photocathode is significantly higher than most of the MoS2 coupled Si-based photocathodes reported elsewhere, indicating excellent PEC H2 production performance.
Original languageEnglish (US)
Pages (from-to)A352
JournalOptics Express
Issue number8
StatePublished - Mar 18 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-2016-CRG5-3005
Acknowledgements: King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR-2016-CRG5-3005), KAUST Sensor Initiative, KAUST Solar Center, KAUST Catalysis Center and KAUST baseline funding.


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