Growth and Characterization of Chalcogenide Semiconductors

Dear Colleagues,

Chalcogenide compounds are related matter consist of at least one chalcogen anion and one cation of an electro-positive element. They are commonly known as sulphides, selenides, tellurides, and sometimes polonides. Many of the chalcogenides are semiconductors, and may contain monochalcogenides, dichalcogenides and trichalcogenides, etc. Their cation elements can be in group IA (Li, Na, ..), IIA (Be, Mg, ..), IIIA (Ga, In, ..), IVA (Ge, Sn, ..), VA (As, Bi, ..), or transition-metal chalcogenides. Some of the renowned materials are MgS and CaS, etc. (IIA monochalcogenide); GaSe, InSe, GaS, and Ga₂S₃, etc. (IIIA mono- and trichalcogenides); GeS, GeSe₂, SnS, and SnSe, etc. (IVA mono- and dichalcogenides); and As₂S₃, Bi₂Se₃ and Bi₂Te₃, etc. (VA trichalcogenides) etc. The family of transition-metal chalcogenides includes transition-metal monochalcogenides (TMMCs) like ZnS and CdS, etc. and transition-metal dichalcogenides (TMDCs) like MX₂ (M=Mo, W, Re, Ti, Zr, Hf, etc. and X=S, Se, Te). Many of the TM and non-TM chalcogenides are very promising for applications in fields related to semiconductor electronics, optoelectronics, bioelectronics, energy and the environment, etc. In particular, most chalcogenides are usually crystallized in a layered hexagonal related structure, a so-called two-dimensional (2D) material. The 2D materials are specially used for large-area, ultra-thin, flexible and curved devices. The topic is currently undergoing enthusiastic study.

The growth methods for chalcogenides crystals can be either bulk form, like the Bridgman method, the travelling heating method, chemical vapor transport, etc. or thin-film form, like CVD, MOCVD, MBE, the chemical method, and different sputtering techniques. The related characterization techniques for chalcogenides include structural, theoretical, physical and chemical methods.

Owing to the novelty and interesting properties of chalcogenides, we invite researchers to submit papers to this Special Issue entitled “Growth and Characterization of Chalcogenide Semiconductor” in the journal Crystals. The collected information of this special issue will interchange knowledges and interact experiences to material researchers and all of the readers. We welcome your contribution to this Special Issue on chalcogenides.

Prof. Ching-Hwa Ho
Guest Editor

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• Synthesis of chalcogenide compounds
• Crystal growth
• Structure study
• 2D chalcogenide studies
• Semiconductors
• Metallic properties
• Optical properties
• Electronics and optoelectronics devices
• Photoluminescence
• Spectroscopy
• Carrier transport
• Photodetector
• Defect studies
• Thermoelectric properties
• Photocatalysis properties
• Band and theoretical calculations
• Other characterization tools related to chalcogenides