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- Title
Porous nano-structured VO films with different surfactants: synthesis mechanisms, characterization, and applications.
- Authors
Xu, Yuanjie; Huang, Wanxia; Shi, Qiwu; Zhang, Yubo; Wu, Jing; Song, Linwei
- Abstract
Porous nano-structured vanadium dioxide (VO) thin films have been prepared on mica substrates via sol-gel process using surfactant cetyltrimethyl ammonium bromide, nonionic surfactant polyethylene glycol, and anionic surfactant sodium dodecyl sulfate as nano-structure directing agents. Models concerning the structure forming were proposed to explain the synthesis mechanisms between VO colloid and different surfactants. Porous nano-structured VO films with sphere-shaped, island-shaped and strip-shaped nanocrystals are synthesized in the experiments, and the optical properties and thermochromic properties of these films are compared. The porous nano-structured VO films showed excellent infrared transmittance (nearly 70 %), low transition temperature (59.7 °C without doping), wide hysteresis width (37.8 °C), and different optical transmittance difference before and after the phase transition (39-67 %). The results suggest that these porous nano-structured VO films have significant importance in practical application in VO-based optical and electronic devices.
- Subjects
POROUS materials; NANOSTRUCTURED materials; VANADIUM oxide; THIN films; SOL-gel processes; POLYETHYLENE glycol; ANIONIC surfactants; SODIUM dodecyl sulfate; CHEMICAL synthesis
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 10, p3823
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1324-x