Two-dimensional van der Waals materials: synthesis for precursor, emerging applications, and future challenges
|
임종선 박사 한국화학연구원 Recent advances in atomically thin two-dimensional van der Waals materials, such as transition-metals chalcogenides(TMCs), have led to a variety of promising technologies for nanoelectronics, photonics, sensing, energy storage, and optoelectronics, to name a few. These materials are finding niche applications for next-generation electronics and optoelectronics devices relying on ultimate atomic thicknesses. However, of the numerous compounds available, only a handful, such as Mo- and W-based TMCs, have been synthesized, typically via sulfurization, selenization and tellurization of metals and metal compounds. Many TMCs are difficult to produce because of the high melting points of their metal and metal oxide precursors. And 2D material synthesis using a single precursor, because of the limitation of a single precursor, it is limited to synthesize 2D materials with a suitable bandgap for various transition metal chalcogenides. Here, the current status of organometallic compound novel precursors for solution and gas phase processes is introduced. Further, for the application to optical devices and high mobility flexible semiconductors based on Van der Waals layered materials, (i) new organometallic compound precursors for large-area synthesis and (ii) reliability of Van der Waals layered material synthesis technology, (iii) bandgap control and their characterization, (iv) process optimization for high-performance devices are reviewed. |