Temperature-dependent morphology of chemical vapor grown molybdenum disulfide
Date of Issue2017
School of Materials Science and Engineering
Monolayered molybdenum disulfide (MoS2) is a 2D direct band gap semiconductor with promising potential applications. In this work, we observed the temperature dependency of the morphologies of MoS2 monolayers from chemical vapor deposition. At a low growing temperature below 850 °C, MoS2 flakes tend to be trianglular in shape. At 850–950 °C, hexagonal MoS2 flakes can be observed. While at a temperature over 950 °C, MoS2 flakes can form rectangular shapes. Complementary characterizations have been made to these samples. We also proposed a mechanism for such temperature-dependent shape evolution based on thermodynamic simulation.
Journal of Physics D: Applied Physics
© 2017 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Physics D: Applied Physics, IOP Publishing Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1088/1361-6463/aa6220].