Effect of annealing temperatures on properties of sol-gel grown ZnO-ZrO2 films

✍ Scribed by T. Ivanova; A. Harizanova; T. Koutzarova; B. Vertruyen

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 360 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.201000427

✦ Synopsis

Mixed ZnO-ZrO 2 films have been obtained by sol-gel technology. By using spin coating method, the films were deposited on Si and glass substrates. The influence of thermal annealings (the temperatures vary from 400 °C to 750 °C) on their structural properties has been studied. The structural behavior has been investigated by the means of XRD and FTIR techniques. The results revealed no presence of mixed oxide phases, the detected crystal phases were related to the hexagonal ZnO and to crystalline ZrO 2 . The sol-gel ZnO-ZrO 2 films showed polycrystalline structure with a certain degree of an amorphous fraction. The optical transmittance reached 91% and it diminished with increasing the annealing temperatures. The optical properties of the sol-gel ZnO-ZrO 2 films, deposited on glass substrates are excellent with high transparency and better then those of pure ZrO 2 films, obtained at similar technological conditions.