This study discusses the potential of two-dimensional (2D) materials as candidates for next-generation semiconductor materials. After the discovery of mechanically exfoliated graphene from graphite, research on two-dimensional materials began in earnest. Although graphene has received a lot of atten...
This study discusses the potential of two-dimensional (2D) materials as candidates for next-generation semiconductor materials. After the discovery of mechanically exfoliated graphene from graphite, research on two-dimensional materials began in earnest. Although graphene has received a lot of attention due to its excellent optical and mechanical properties, it has a limitation in that it cannot control the flow of electrons because it has a zero-band gap. Addressing the inherent constraints of graphene necessitates significant research on novel materials, with Transition Metal Dichalcogenides (TMDCs) emerging as a promising candidate for this purpose. TMDC with MX2 structure consists of an X-M-X sandwich. Since it is a layered material like graphene, it maintains the advantages of nano-thin film that graphene has and has a band gap of 1~2 eV depending on the type of material, so it can be applied to switching devices where graphene could not be applied before. do. Although various methods for synthesizing single crystals have been reported, the molten salt route, as introduced in this paper, can synthesize single crystals more easily and at a lower cost than conventional methods. Here, the mixed salt and reactant were heated above the melting point of the mixed salt, transforming it into a liquid state. Subsequently, the reactant was dissolved in the mixed salt and underwent the desired reaction. To be more efficiently applied to the actual industry, it is necessary to develop a large-size process, and the single crystal synthesized through the molten salt route can grow to a large-area size depending on the size of the container used. Furthermore, the utilization of the molten salt method enables the synthesis of materials by employing solvents like NaCl and KCl, which ensures convenient material supply and demand. This method offers the advantage of low material costs, as well as the ability to reuse the utilized salt, thereby yielding significant economic benefits. It is easy to apply to large-scale industries since it does not require complicated processes in the synthesis process. TMDC can be applied to various fields depending on its size and thickness. Large-sized 2D materials can be used in optical fields such as transistors and sensors, and small-sized materials can be used as battery electrodes. In addition, if the multi-layered TMDCs are exfoliation in atomic layer units, they can be applied to various fields such as next-generation portable RF devices or display devices because of their high flexibility and transparency. The structure and microstructure of TiX2 (X=S, Se, Te) single crystal were analyzed and physical properties were evaluated. In addition, an exfoliation study for TiX2 (X = S, Se, Te) is presented. Finally, the results of applying Li-ion and Na-ion batteries as anodes for TiS2 and TiSe2 are briefly discussed.
This study discusses the potential of two-dimensional (2D) materials as candidates for next-generation semiconductor materials. After the discovery of mechanically exfoliated graphene from graphite, research on two-dimensional materials began in earnest. Although graphene has received a lot of attention due to its excellent optical and mechanical properties, it has a limitation in that it cannot control the flow of electrons because it has a zero-band gap. Addressing the inherent constraints of graphene necessitates significant research on novel materials, with Transition Metal Dichalcogenides (TMDCs) emerging as a promising candidate for this purpose. TMDC with MX2 structure consists of an X-M-X sandwich. Since it is a layered material like graphene, it maintains the advantages of nano-thin film that graphene has and has a band gap of 1~2 eV depending on the type of material, so it can be applied to switching devices where graphene could not be applied before. do. Although various methods for synthesizing single crystals have been reported, the molten salt route, as introduced in this paper, can synthesize single crystals more easily and at a lower cost than conventional methods. Here, the mixed salt and reactant were heated above the melting point of the mixed salt, transforming it into a liquid state. Subsequently, the reactant was dissolved in the mixed salt and underwent the desired reaction. To be more efficiently applied to the actual industry, it is necessary to develop a large-size process, and the single crystal synthesized through the molten salt route can grow to a large-area size depending on the size of the container used. Furthermore, the utilization of the molten salt method enables the synthesis of materials by employing solvents like NaCl and KCl, which ensures convenient material supply and demand. This method offers the advantage of low material costs, as well as the ability to reuse the utilized salt, thereby yielding significant economic benefits. It is easy to apply to large-scale industries since it does not require complicated processes in the synthesis process. TMDC can be applied to various fields depending on its size and thickness. Large-sized 2D materials can be used in optical fields such as transistors and sensors, and small-sized materials can be used as battery electrodes. In addition, if the multi-layered TMDCs are exfoliation in atomic layer units, they can be applied to various fields such as next-generation portable RF devices or display devices because of their high flexibility and transparency. The structure and microstructure of TiX2 (X=S, Se, Te) single crystal were analyzed and physical properties were evaluated. In addition, an exfoliation study for TiX2 (X = S, Se, Te) is presented. Finally, the results of applying Li-ion and Na-ion batteries as anodes for TiS2 and TiSe2 are briefly discussed.
Keyword
#2D Material TMDCs TiX2 Molten salt synthesis
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