Enhanced Optical Modulation Properties via Two-step Annealing of Sol-Gel Deposited Vanadium Dioxide Thin Films.

ABSTRACT: Vanadium dioxide (VO₂) is a key coating component for smart devices, especially in smart windows, due to its excellent thermochromic properties and metal-insulating transformation. In this study, we investigate the influence of different annealing on the VO₂ thin films prepared by a sol-gel technique combined with spin-coating and compare the changes in morphology, structure, and optical properties. Of the two types of VO₂ (M) films obtained by one-step annealing at 700 °C and two-step annealing at 500 and 700 °C, the two-step annealed samples formed an intermediate phase VO₂ (B), which allowed them to exhibit higher purity and better crystallinity than those of the one-step annealed samples. An in-situ XRD study confirmed that the higher purity

SUBMITTER: Li Z 

PROVIDER: S-EPMC11800157 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature