Effect of annealing on the structural, topographical and optical properties of sol gel derived ZnO and AZO thin films

Autor: Sengupta, Joydip, Sahoo, R. K., Mukherjee, C. D.
Rok vydání: 2019
Předmět:
Zdroj: Materials Letters Volume 83, 15 September 2012, Pages 84-87
Druh dokumentu: Working Paper
DOI: 10.1016/j.matlet.2012.05.130
Popis: A comparative study of the physical properties of undoped Zinc Oxide (ZnO) and Al doped Zinc Oxide (AZO) thin films were performed as a function of annealing temperature. The structural properties were analyzed using X-ray diffraction and the recorded patterns indicated that the crystallinity of the films always enhanced with increasing annealing temperature while it degrades with Al doping. The topographical modification of the films due to heat treatment was examined by atomic force microscopy which revealed that annealing roughened the surface of all the films; however the AZO films always exhibited smoother morphology than ZnO. Study of the optical properties by UV-Visible spectrophotometer demonstrated that the transmittance was gradually diminished with the rise in annealing temperature. In addition, a notable increase in the optical band gap was also observed for the AZO films.
Comment: AZO thin film; Sol gel preparation; Annealing; X ray diffraction; Atomic force microscopy;Optical properties. arXiv admin note: text overlap with arXiv:1908.05886
Databáze: arXiv