CVD Growth of Rhenium diselenide (ReSe<sub>2 </sub>) on Silica Substrate

ORAL

Abstract

Flakes of ReSe2 were grown by a chemical vapor deposition technique on silica substrates and investigated at room temperature by using Raman and absorption spectroscopies. The Raman scattering spectrum exhibits sixteen phonon modes in the range of 100 - 300 cm-1 while the calculated modes were eighteen as obtained by the density functional theory (DFT) calculations. The ReSe2 structural integrity was confirmed by using the XRD and scanning electron microscopy while energy dispersion spectroscopy confirms the correct elemental composition. The absorption peaks were obtained for ReSe2 flakes and found to be in the spectral region of 885 - 942 nm (1.401 – 1.316 eV) indicating a direct band gap. This is confirmed by the DFT calculations that revealed a direct bandgap of 1.19 eV for ReSe2.

*Calculations are performed using Arkansas High Performance Computing Center (AHPCC) supercomputing resources. B. H. acknowledges the MonArk Quantum Foundry supported by the National Science Foundation Q-AMASE-i program under NSF Award No. DMR-1906383. Also, the Quantum Core fellowship award. This material is based on research sponsored by AFRL under agreement number FA8750-24-1-1019. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon.

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Publication: .

Presenters

  • Juwon Onasanya

    • University of Arkansas

Authors

  • Juwon Onasanya

    • University of Arkansas

  • Solomon Ojo

    • University of Arkansas

  • Bothina Hamad

    • University of Arkansas

  • Mourad Benamara

    • University of Arkansas

  • Omar Manasreh

    • University of Arkansas