Visualizing Thermal Reduction in Graphene Oxide.

ABSTRACT: The reduction of graphene oxide (GO) is critical for tuning its properties. This study integrates optical contrast analysis with Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) to investigate the structural and optical evolution of GO in thermal reduction. For GO on 100 nm SiO₂/Si, the R channel contrast exhibits superior sensitivity to structural changes, making it a reliable indicator of the reduction process. A theoretical model based on Fresnel equations reveals the role of SiO₂ thickness in modulating optical contrast, providing guidelines for substrate optimization and channel selection.

SUBMITTER: Xu X 

PROVIDER: S-EPMC12113108 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature