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Bandgap Widening of Phase Quilted, 2D MoS2 by Oxidative Intercalation
Sung Ho Song1, Bo Hyun Kim1, Duk-Hyun Choe2
1Department of Materials Science and Engineering, Graphene Research Center of KI for the Nano Century, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea.
Advanced Materials (Deerfield Beach, Fla.)
|April 14, 2015
Abstract:
Controllable bandgap widening from 1.8 to 2.6 eV is reported from oxidized MoS2 sheets that are composed of quilted phases of various MoSxOy flakes. The exfoliated flakes have large size (≥100 μm × 100 μm) sheets with average thickness of 1.7 nm. Remarkably, fine reversible tuning of the bandgap is achieved by postprocessing sulfurization of the MoSxOy sheets.
Keywords:
2D transition metal dichalcogenidesbandgap wideningintercalation compoundsmolybdenum disulfidephotoluminescence
