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Influence of zinc concentration on band gap and sub-band gap absorption on ZnO nanocrystalline thin films sol-gel grown Cover

Influence of zinc concentration on band gap and sub-band gap absorption on ZnO nanocrystalline thin films sol-gel grown

Materials Science-Poland
Volume 35 (2017): Issue 1 (March 2017)
By: Munirah,  Ziaul Raza Khan,  Anver Aziz,  Mohd. Shahid Khan and  M.U. Khandaker  
Open Access
|Feb 2017

Figures & Tables

Flow chart of preparation of ZnO thin films.
(a) Schematic diagram of PDS setup, (b) the interface geometry of the pump and probe beam.
XRD pattern of ZnO thin films with different zinc molar concentrations.
(a) SEM micrographs of ZnO thin films with different zinc molar concentrations, (b) EDX spectra of ZnO thin films.
FT-IR spectra of ZnO thin films with different zinc concentrations.
Absorbance spectra of ZnO thin films with different zinc concentrations.
Absorption coefficients of ZnO thin films with different zinc concentrations.
Tauc’s plots of ZnO thin films with different zinc concentrations.
Absorption coefficients α of ZnO thin thin films with different zinc concentrations (from PDS) as a function of photon energy in the energy range of 1.5 eV to 3.3 eV.
Photoluminescence spectra of ZnO thin films grown from different zinc concentration sols.

Structural parameters, thickness and band gap of ZnO thin films with different zinc acetate concentrations_

Zinc acetateGrowthCrystalliteThicknessBand
concentrationplanesize [nm][nm]gap [eV]
 0.35 M(1 0 0)301903.31
0.65 M(1 0 0)352503.24
0.95 M(1 0 0)513003.18
DOI: https://doi.org/10.1515/msp-2017-0039 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 246 - 253
Submitted on: Mar 15, 2016
|
Accepted on: Feb 6, 2017
|
Published on: Feb 24, 2017
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
ZnO,
photothermal deflection spectroscopy,
sub-band gap,
sol-gel
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2017 Munirah, Ziaul Raza Khan, Anver Aziz, Mohd. Shahid Khan, M.U. Khandaker, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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