Phosphorus Doping Coupled with Gradient Film Strategy to Achieve Thermochromic Performance Enhancement of VO₂.

ABSTRACT: Nonmetal elements have remarkable potential in modulating the metal-insulator transition behavior of VO₂, but little is known about their impact on thermochromic performance. Here, phosphorus (P) is successfully doped into VO₂ by the precursor decomposition diffusion. XPS spectra, together with DFT calculations, demonstrate V-substitutional doping (Pv). The onset transition temperature of P-doped VO₂ decreases from 62.8 to 50.2 °C. Theoretical calculations reveal that P_V interferes with strong V-V interactions, decreasing the d orbital occupancy. However, the worse crystallinity leads to severe NIR modulation degradation even though luminance transmittance is enhanced by 6%. P-gradient films are developed to effectively address the weakeni

SUBMITTER: Xue Y 

PROVIDER: S-EPMC11956010 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature