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

doi:10.1016/j.spmi.2021.106903

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

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

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 (Φ_B), 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 language	English
Article number	106903
Journal	Superlattices and Microstructures
Volume	155
DOIs	https://doi.org/10.1016/j.spmi.2021.106903
Publication status	Published - 07-2021

All Science Journal Classification (ASJC) codes

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

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10.1016/j.spmi.2021.106903

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

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.",

author = "U. Chaitra and {Muhammed Ali}, {A. V.} and Mahesha, {M. G.} and Akshayakumar Kompa and Dhananjaya Kekuda and {Mohan Rao}, K.",

note = "Funding Information: One of the authors (Chaitra U) thank Manipal Academy of Higher Education (MAHE), Manipal, for the research facilities and financial support. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = jul,

doi = "10.1016/j.spmi.2021.106903",

language = "English",

volume = "155",

journal = "Superlattices and Microstructures",

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T1 - Property evaluation of spin coated Al doped ZnO thin films and Au/AZO/FTO Schottky diodes

AU - Chaitra, U.

AU - Muhammed Ali, A. V.

AU - Mahesha, M. G.

AU - Kompa, Akshayakumar

AU - Kekuda, Dhananjaya

AU - Mohan Rao, K.

N1 - Funding Information: One of the authors (Chaitra U) thank Manipal Academy of Higher Education (MAHE), Manipal, for the research facilities and financial support. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/7

Y1 - 2021/7

N2 - 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.

AB - 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.

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

Abstract

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