TY - JOUR
T1 - One-Step Fabrication Method of MoS2for High-Performance Surface-Enhanced Raman Scattering
AU - Pan, Changji
AU - Song, Jichao
AU - Sun, Jingya
AU - Wang, Qingsong
AU - Wang, Feifei
AU - Tao, Wenpan
AU - Jiang, Lan
N1 - Publisher Copyright:
© 2021 American Chemical Society
PY - 2021/11/11
Y1 - 2021/11/11
N2 - A one-step method was proposed to prepare a high-performance surface-enhanced Raman scattering (SERS) substrate based on bulk MoS2via femtosecond laser pulse modification. The Raman spectra of Rhodamine 6G (R6G) molecules were measured on different laser fluence treatment substrates with various solution concentrations. The most optimized laser-treated MoS2substrate showed a large Raman enhancement factor of 1.67 × 105and extremely high sensitivity for detection of R6G molecules, even down to 10-8M. The morphology characterization, photoluminescence measurement, and electromagnetic simulation were used to reveal the laser treatment-dependent Raman enhancement mechanism. The results indicated that the p-doping effect induced by oxygen absorption led to holes filling on the top of the valence band after the laser treatment, which can enhance the charge transfer between MoS2and R6G molecules and finally lead to the SERS effect. This method can provide a high-performance and cost-efficient way to prepare SERS substrates.
AB - A one-step method was proposed to prepare a high-performance surface-enhanced Raman scattering (SERS) substrate based on bulk MoS2via femtosecond laser pulse modification. The Raman spectra of Rhodamine 6G (R6G) molecules were measured on different laser fluence treatment substrates with various solution concentrations. The most optimized laser-treated MoS2substrate showed a large Raman enhancement factor of 1.67 × 105and extremely high sensitivity for detection of R6G molecules, even down to 10-8M. The morphology characterization, photoluminescence measurement, and electromagnetic simulation were used to reveal the laser treatment-dependent Raman enhancement mechanism. The results indicated that the p-doping effect induced by oxygen absorption led to holes filling on the top of the valence band after the laser treatment, which can enhance the charge transfer between MoS2and R6G molecules and finally lead to the SERS effect. This method can provide a high-performance and cost-efficient way to prepare SERS substrates.
UR - http://www.scopus.com/inward/record.url?scp=85118950831&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.1c05340
DO - 10.1021/acs.jpcc.1c05340
M3 - Article
AN - SCOPUS:85118950831
SN - 1932-7447
VL - 125
SP - 24550
EP - 24556
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 44
ER -