[13p-P5-1~64] 17 Nanocarbon Technology（Poster）

[13p-P5-42] Local Doping Concentration Modulation on Graphene Probed by Tip-Enhanced Raman

〇Takuya Iwasaki^1,2, Taharh Zelai², Sheng Ye², Harold Chong², Yoshishige Tsuchiya², Hiroshi Mizuta^1,2 (1.JAIST, 2.Univ. of Southampton)

Keywords:Graphene, Tip-enhanced Raman spectroscopy (TERS), Local doping

Tip-enhanced Raman spectroscopy (TERS), which has better spatial resolution than conventional Raman owing to near-field effect, is performed to analyze a local Raman spectrum on graphene after device fabrication processes. As a result, it is hard to find difference in far field spectra at different positions. On the other hand, TERS spectra show the distinct G and 2D peak shift at each position. This result can be attributed to the doping concentration modulation depending on the position in graphene.