[KJS] 20th KIM/JIM Symposium Energy Storage Materials

[KJS14] Directly Assembled 3D Molybdenum Disulfide on Silicon Wafer for Efficient Photoelectrochemical Water Reduction

Gangtae Jin¹, Chang-Soo Lee¹, Dinsefa Mensur Andoshe², Ho Won Jang², *Moon-Ho Jo¹ (1. Pohang University of Science and Technology (POSTECH), Korea、2. Seoul National University, Korea)

Keywords:3D molybdenum disulfide、hydrogen evolution reaction catalysts、metal–organic chemical vapor deposition、solar water splitting

By controlling the gas phase kinetics during metal–organic chemical vapor deposition, wafer-scale direct synthesis of 3D MoS2 films on TiO2-coated p-type Si substrates is demonstrated. The 3D MoS2 layer with a number of edge sites exposed to ambient substantially reduces the HER overpotential of Si photocathode and simultaneously increases the saturation current density due to the antireflection effect. Directly grown 3D MoS2 thin films are stable under extended water reduction duration.