Abstract
Sb2Te3 and Ge2Sb2Te5 (GST) are important materials used in phase-change photonic devices. We investigated the tunable optical properties of Sb2Te3, demonstrating its potential for continuous tuning from metallic-like to dielectric behavior through intermediate amorphous states. Using a resonant thin-film structure, we explored how Sb2Te3 may enable continuous color modification. We have also designed and simulated optical reflectors to enhance color tuning by gradually disordering the Sb2Te3 crystal structure. These results suggest that gradual changes in the optical properties of Sb2Te3 could be potentially used for future visible photonic applications, such as zero-static power tunable color reflective displays.