Formation and metal-to-insulator transition properties of VO 2–ZrV 2O 7 composite films by polymer-assisted deposition

• Published in: Solar energy materials and solar cells Vol. 95; no. 7; pp. 1604 - 1609
• Main Authors: Du, Jing, Gao, Yanfeng, Luo, Hongjie, Zhang, Zongtao, Kang, Litao, Chen, Zhang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2011
• Subjects: Composite film; Metal–insulator transition; VO 2; ZrV 2O 7; Composite film; VO 2; Metal–insulator transition; ZrV 2O 7
• ISSN: 0927-0248; 1879-3398
• DOI: 10.1016/j.solmat.2011.01.009

VO 2–ZrV 2O 7 composite films were prepared on silica glass substrates by polymer-assisted deposition using a V–Zr–O solution. The coexistence of ZrV 2O 7 and VO 2 was confirmed by Raman spectroscopy, glance angle X-ray diffraction, and X-ray photoelectron spectroscopy. The composite films with similar thickness of about 95 nm showed decreased particle sizes and significantly enhanced luminous transmittances (from 32.3% at Zr/V=0 to 53.4% at Zr/V=0.12) with increasing Zr/V rations. The enhancement in the luminous transmittance was ascribed to the absorption-edge changes in the composite films. This feature benefits the application of VO 2 to smart windows. [Display omitted] ► VO 2–ZrV 2O 7 composite films were prepared by polymer-assisted deposition. ► Addition of Zr significantly influenced the surface morphology of films. ► Luminous transmittance of films largely increased as Zr/V increases.