Introduction.- Theoretical background.- Experimental methods.- Distinctive magnetotransport of graphene p-n-p junctions via resist-free fabrication and controlled diffusion of metallic contact.- Observation of quantum Hall plateau-plateau transition and scaling behavior of the zeroth Landau level in graphene p-n-p junction.- Extrinsic Origin of Persistent Photoconductivity in Monolayer MoS2 Field Effect.- Conclusion.
Cheng-Hua Liu graduated from National Taiwan University with a major in Physics. He obtained his Ph.D. in May 2016. His research projects involve investigations on the graphene p-n-p junction and the MoS2 thin-film transistor using the resistor-free fabrication method. His main project is based in Prof. Chi-Te Liang's lab at National Taiwan University and Wei-Hua Wang's lab at the Institute of Atomic and Molecular Sciences.