Abstract
Electrochromic, structural and optical properties of zirconium oxide mixed tungsten oxide films with respect to heat treatment temperature were investigated. The structural properties were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The electrochemical and optical properties were measured by cyclic voltammetry (CV) and nkd analyzer. The films are amorphous and microcrystalline depending on the post-annealing temperatures, both of them having a very smooth surface. Different electrochromic properties can be obtained for amorphous and microcrystalline films. The optical properties of sol-gel spin coated zirconium oxide mixed WO3 thin films have been measured as a function of heat treatment temperature. The refractive index at λ=550nm increased from 1.92 to 2.19 ± 0.01 when heat treatment temperature increased from 200°C to 400°C for tungsten oxide films. The optical band gap value of WO3 (200°C), WO3-ZrO 2 (200°C) and WO3-ZrO2 (400°C) were found to be 3.46, 3.53 and 3.51 eV respectively.
Original language | English |
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Pages (from-to) | 597-600 |
Number of pages | 4 |
Journal | Key Engineering Materials |
Volume | 264-268 |
Issue number | I |
DOIs | |
Publication status | Published - 2004 |
Event | Proceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey Duration: 29 Jun 2003 → 3 Jul 2003 |
Keywords
- Electrochromism
- Heat treatment effect
- Optical Properties
- Sol-gel
- Thin Films
- Zirconium mixed tungsten oxide