Property evaluation of spin coated Al doped ZnO thin films and Au/AZO/FTO Schottky diodes

U. Chaitra, A. V. Muhammed Ali, M. G. Mahesha, Akshayakumar Kompa, Dhananjaya Kekuda, K. Mohan Rao

Research output: Contribution to journalArticlepeer-review

Abstract

In the present work, the structural, optical and electrical properties of pristine and aluminium doped zinc oxide (AZO) thin films deposited on fluorine doped tin oxide (FTO) coated glass substrates by sol-gel spin coating technique are explored. Further, the effect of doping on the performance of Au/AZO/FTO Schottky diode were analysed through I–V characterization at room temperature. The c-axis orientation of the deposited films was confirmed by X-Ray diffraction studies. Micrographs from atomic force microscope revealed the wrinkled morphology and columnar structure for undoped and doped zinc oxide thin films respectively. The diode parameters such as Schottky barrier height (ΦB), ideality factor (n) and series resistance (Rs) were determined by using thermionic emission model and Cheung's model. These parameters were found to depend on the doping concentration. Devices with undoped and 6 at% aluminium doped ZnO thin films have shown better rectification.

Original languageEnglish
Article number106903
JournalSuperlattices and Microstructures
Volume155
DOIs
Publication statusPublished - 07-2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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