Prof. Jung of SKKU, Nano Optical Measurement Finds the World's First Defective Signal in Two-Dimensional Semiconductors
- 성균융합원
- Hit2458
- 2018-10-29
Professor Jung Moon-Seok of SKKU, Nano Optical Measurement Finds
the World's First Defective Signal in Two-Dimensional Semiconductors
Posted on October 23 in ACS Nano,
the most prestigious international journal in the field of nanoscience
Professor Jung Moon-Seok said that he detected the defect-related Raman scattering signal of tungsten disulfide (WS2), a two-dimensional single layer semiconductor, using tip-enhanced Raman spectroscopy (TERS) *.
The team used probe-enhanced Raman spectroscopy (TERS), which is capable of both surface nanostructure analysis and optical experimentation, to detect new signals that were not previously observed in areas with many defects. In addition, density functional theory (DFT) calculations confirmed that this signal is a vacancy defect of one of the semiconductor defects, sulfur (S) atoms.
This study was supported by the Korea Research Foundation. The study results were published on October 23 in ACS Nano, one of the most prestigious international journals in the field of nanoscience published by the American Chemical Society.
* link
1) https://news.joins.com/article/23064336
2) http://www.dhnews.co.kr/news/articleView.html?idxno=87237
3) http://www.veritas-a.com/news/articleView.html?idxno=131710