TY - JOUR
T1 - Enhanced Raman Scattering on Nine 2D van der Waals Materials
AU - Kitadai, Hikari
AU - Wang, Xingzhi
AU - Mao, Nannan
AU - Huang, Shengxi
AU - Ling, Xi
N1 - Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/6/6
Y1 - 2019/6/6
N2 - Since the discovery of graphene-enhanced Raman scattering in 2010, other 2D materials have been reported to show a Raman enhancement effect on molecules adsorbed on their surfaces. The mechanism for this phenomenon, however, still remains elusive. Here we performed a comparative investigation of the Raman enhancement effect on nine 2D materials with an identical number of copper phthalocyanine (CuPc) as probe molecules. Furthermore, the degree of charge transfer for different CuPc/2D material combinations was calculated, and a positive correlation with enhancement factors was observed, providing evidence to support the charge-transfer-dominated chemical mechanism for this amplification. This study also suggests that Raman enhancement spectroscopy can be used as a nondestructive and rapid probe for the interface interaction between molecules and 2D materials, crucial for organic molecule/2D material-based electronic and optoelectronic devices.
AB - Since the discovery of graphene-enhanced Raman scattering in 2010, other 2D materials have been reported to show a Raman enhancement effect on molecules adsorbed on their surfaces. The mechanism for this phenomenon, however, still remains elusive. Here we performed a comparative investigation of the Raman enhancement effect on nine 2D materials with an identical number of copper phthalocyanine (CuPc) as probe molecules. Furthermore, the degree of charge transfer for different CuPc/2D material combinations was calculated, and a positive correlation with enhancement factors was observed, providing evidence to support the charge-transfer-dominated chemical mechanism for this amplification. This study also suggests that Raman enhancement spectroscopy can be used as a nondestructive and rapid probe for the interface interaction between molecules and 2D materials, crucial for organic molecule/2D material-based electronic and optoelectronic devices.
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U2 - 10.1021/acs.jpclett.9b01146
DO - 10.1021/acs.jpclett.9b01146
M3 - Article
C2 - 31117687
AN - SCOPUS:85067078696
SN - 1948-7185
VL - 10
SP - 3043
EP - 3050
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 11
ER -