Bulletin of ANPA

Abstract submitted to ANPA Conference July 14–16, 2023

Volume 5, Number 1

Condensed Matter Physics and Material Science

Abstract ID: ANPA2023-N00073

Abstract:

ANPA2023-N00073: Surface-Enhanced Raman Scattering-based Chemical Sensing on Two-Dimensional 2H- and 1T’-MoTe2 Films

Authors:

• Tej Bahadur Limbu; University of Houston-Clear Lake

• Bikram Adhikari, Kizhanipuram Vinodgopal, Fei Yan; Department of Chemistry and Biochemistry, North Carolina Central University, Durham, NC

Two-dimensional (2D) molybdenum ditelluride (MoTe2) is a promising platform for surface-enhanced Raman scattering (SERS) applications, due to its excellent electronic properties. Herein, we demonstrate a highly sensitive SERS-based molecular sensing on chemical vapor deposition (CVD)-synthesized 2H- and 1T’-MoTe2 films, using methylene blue (MB) as a probe molecule. Our results show that Raman enhancement on 1T’-MoTe2 is three times higher than that on 2H-MoTe2, and the 1T’-MoTe2 film is an efficient Raman-enhancing substrate that can be used to detect MB at nanomolar concentrations. Our study imparts knowledge on the significance of a suitable combination of laser excitation energy and molecule-material platform for achieving ultrasensitive SERS-based chemical sensing.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00073