Effect of Nd doping on structural and opto-electronic properties of CdO thin films fabricated by a perfume atomizer spray method

A perfume atomizer-assisted spray pyrolysis method was employed to fabricate undoped and neodymium (Nd)-doped cadmium oxide (CdO) thin films. X-ray diffraction results reveal that all the films are polycrystalline with a cubic structure with a preferential orientation along the (200) direction. Sche...

Full description

Saved in:
Bibliographic Details
Published in:Bulletin of materials science 2019-02, Vol.42 (1), p.8, Article 8
Main Authors: Ravikumar, M, Chandramohan, R, Kumar, K Deva Arun, Valanarasu, S, Ganesh, V, Shkir, Mohd, Alfaify, S, Kathalingam, A
Format: Article
Language:English
Subjects:
Absorptivity
Aluminum
Atomizing
Carrier density
Chemistry and Materials Science
Crystallites
Doped films
Doping
Engineering
Fourier transforms
Glass substrates
Heterostructures
Materials Science
Morphology
Neodymium
Optical properties
Optoelectronics
Photoconductivity
Photodiodes
Silicon
Spectrum analysis
Spray pyrolysis
Thin films
Zinc oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A perfume atomizer-assisted spray pyrolysis method was employed to fabricate undoped and neodymium (Nd)-doped cadmium oxide (CdO) thin films. X-ray diffraction results reveal that all the films are polycrystalline with a cubic structure with a preferential orientation along the (200) direction. Scherrer’s formula was used to calculate the crystallite size of Nd-doped CdO films. Energy dispersive spectroscopy results show that Cd, Nd and O elements are present in Nd-doped CdO thin films. The optical absorption of the doped films is increased along with increasing Nd-doping level. The prepared CdO thin films have a high absorption coefficient in the visible region and the optical band gap is decreased on increasing Nd doping content. The electrical carrier concentration ( n ) of the deposited films is increased with increasing Nd doping concentration. Photoconductivity studies of a nanostructured Al/Nd–n-CdO/p-Si/Al device showed a non-linear electric characteristics indicating diode-like behaviour. Prepared Nd:CdO films could increase the photo-sensing effect of this n-CdO/p-Si heterostructure. These Nd-doped CdO thin films may open a new avenue for photodiode application in near future.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-018-1688-x