GaS/ZnS heterojunctions via sulfurization: thin film deposition and characterizations
ORAL
Abstract
Thin films of Ga(II)S as produced by sulfurization of gallium oxides are investigated concerning their structures, electrical and optical properties. The weak interlayer coupling of layer compounds facilitates ease of growth into 2D materials or heterojunction structures with other 3D counterparts. In this work, we focused on the superlattices of GaS/ZnS through substitution of oxygen with sulfur atoms starting from their pristine form of GaO/ZnO superlattices mostly put on sapphire substrates, though other substrates have also been used. The chemical substitution was conducted by vaporizing sulfur powders at a proper temperature to achieve a suitable vapor pressure by which the reaction could reach completion. The samples thus obtained were characterized by various techniques of X-ray diffraction (XRD) and grazing angle reflectivity (XRR) measurements from which the crystal structure, interface smoothness and mass density of the constituent layers can be determined. Variable-temperature magneto-transport behaviors and luminescence properties will be discussed in relation to the material processing conditions of the sulfide-based quantum-well structures.
*Grant No. 105-2221-E-110 -042 - Ministry of Science and Technology, Taiwan.
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Presenters
Zong Wu
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Authors
Zong Wu
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Quark Chen
Physics, Natl Sun Yat-Sen University
Physics, Natl Sun Yat Sen Univ
Physics and Center of Superconductivity, University of Houston
Wanchen Hsieh
International College of Semiconductor Technology, Natl Chiao-Tung University
Physics, Natl Sun Yat Sen Univ
P. V. Wadekar
Physics, Natl Sun Yat-Sen University
Natl Sun Yat-Sen Univ
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Yi Liang
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Shih Huang
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Che Min Lin
Physics, Natl Sun Yat-Sen University
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Wei Ciou
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Po Lin
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Ming Chou
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Li-Wei Tu
Department of Physics, National Sun Yat-sen University
Physics, Natl Sun Yat-Sen University
Natl Sun Yat-Sen Univ
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Ikai Lo
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Chien-Cheng Kuo
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Shin-Ming Huang
National Sun Yat-sen University
Department of Physics, National Sun Yat-sen University
National Sun Yat-Sen University
National Sun Yat-Sen U.
Department of Physics, National Sun Yat-Sen University
Physic, Natl Sun Yat Sen Univ
Physics, Natl Sun Yat Sen Univ
Yi Lu
Physics, Natl Sun Yat Sen Univ
Physic, Natl Sun Yat Sen Univ
Wei-Kan Chu
Physics and TcSUH, University of Houston
University of Houston
Physics and Center of Superconductivity, University of Houston
