Hyungjun Kim

TL;DR: The fabrication of top-gate phototransistors based on a few-layered MoS(2) nanosheet with a transparent gate electrode exhibited excellent photodetection capabilities for red light, while those with single- and double-layers turned out to be quite useful for green light detection.

TL;DR: This work describes a process for the synthesis of WS2 nanosheets through the sulfurization of an atomic layer deposition (ALD) WO3 film with systematic layer controllability and wafer-level uniformity, and develops aprocess for the fabrication ofWS2 nanotubes by utilizing the high conformality of the ALD process.

TL;DR: This work demonstrates the improvement of gas-sensing performance of large-area tungsten disulfide (WS2) nanosheets through surface functionalization using Ag nanowires (NWs) to improve 2D TMDC gas sensors.

TL;DR: Spectroscopic and microscopic results indicate that the synthesized Mo1−xWxS2 alloys have complete mixing of Mo and W atoms and tunable band gap by systematically controlled composition and layer number.

TL;DR: In this paper, the authors investigated the interaction dynamics of two important direct-gap excitons and their associated broadening kinetics in ultrafast pump-probe spectroscopy.