کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5366019 | 1388342 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Microstructure and optical properties of nanocrystalline ZnO and ZnO:(Li or Al) thin films Microstructure and optical properties of nanocrystalline ZnO and ZnO:(Li or Al) thin films](/preview/png/5366019.png)
Zinc oxide thin films (ZnO, ZnO:Li, ZnO:Al) were deposited on glass substrates by a sol-gel technique. Zinc acetate, lithium acetate, and aluminum chloride were used as metal ion sources in the precursor solutions. XRD analysis revealed that Li doped and undoped ZnO films formed single phase zincite structure in contrast to Al:ZnO films which did not fully crystallize at the annealing temperature of 550 °C. Crystallized films had a grain size under 50 nm and showed c-axis grain orientation. All films had a very smooth surface with RMS surface roughness values between 0.23 and 0.35 nm. Surface roughness and optical band tail values increased by Al doping. Compared to undoped ZnO films, Li doping slightly increased the optical band gap of the films.
Journal: Applied Surface Science - Volume 253, Issue 10, 15 March 2007, Pages 4593-4598