Preparation and Photoelectric Properties of Nb/SnO₂ Composite Thin Films

Abstract:

By using sol-gel method, Nb/SnO₂ gel was prepared,and spin coating method was used to coat on glass substrates, which dried and calcined to obtain a homogeneous Nb / SnO₂ composite films.Under the same experimental conditions, the different doping amount of nickel, calcination temperature on the structure and morphology of Nb/SnO₂ film were discussed. By using XRD, IR, SEM and other testing methods, the structure and morphology of Nb / SnO₂ composite film were characterized.At 500 °C, the film particle had high crystallization and small size,and the surface of the film was well-distributed.Its optical and electrical properties were tested by the ultraviolet-visible spectrophotometer and four-probe resistivity meter.UV-Vis spectra showed that Nb / SnO₂ film absorbance in the near ultraviolet region had increased significantly, but the absorbance showed a downward trend with the increasing amount of Nb⁵⁺ doped;Conductivity analysis showed: Nb⁵⁺ doping amount of 8% (the amount of material), the conductivity of Nb/SnO₂ composite films was best.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 1118-1122
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.1118
• Online since: April 2016
• Authors: Rui Ying He, Chang Ping Wei, Guo Dong Wang, Jing San
• Keywords: Functional Materials, Nb-Doping, SnO₂ Film, Sol-Gel

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