Chalcogenide thin films have been a prominent fixture in recent materials science research. This is due to their optical properties that can be manipulated during fabrication. Prepared Ge25Se75 and Ge20Sb5Se75 glass solutions were spin-coated onto soda lime substrates and annealed at temperatures ranging between 60 °C and 210 °C. Samples of each glass were exposed to various wavelengths via both broad spectrum and line sources to induce structural changes. Structural changes observed were correlated to the absorbed energy from the light source used. Optical and structural analysis of these samples was done by UV-Vis, Raman, and FTIR spectroscopy. Ge25Se75 was established to be more photosensitive than the Ge20Sb5Se75 composition. Samples that were annealed at lower temperatures exhibited the most pronounced structural changes for both compositions.

Photo-induced optical and structural changes of germanium-based thin films

Where thousands of chemistry professionals meet to share ideas and advance scientific and technical knowledge. Spring 2023 abstracts, posters, and presentations will launch at the end of March.

ACS Spring 2023

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.