Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films

The paper presents the investigation by conductive-atomic force microscopy (C-AFM) of the variation of the local conductivity and topography of the transparent ZnO thin films deposed onto soda lima glass substrates by spin-coating of pre-prepared ZnO nanoparticles. With conductivity measurements at...

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Main Authors: A. ALEXA, A. PIMENTEL, T. CALMEIRO, A. ISTRATE, E. FORTUNATO, V. MUȘAT
Format: Article
Language:English
Published: Galati University Press 2015-06-01
Series:The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
Subjects:
Online Access:https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/1329
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author A. ALEXA
A. PIMENTEL
T. CALMEIRO
A. ISTRATE
E. FORTUNATO
V. MUȘAT
author_facet A. ALEXA
A. PIMENTEL
T. CALMEIRO
A. ISTRATE
E. FORTUNATO
V. MUȘAT
author_sort A. ALEXA
collection DOAJ
description The paper presents the investigation by conductive-atomic force microscopy (C-AFM) of the variation of the local conductivity and topography of the transparent ZnO thin films deposed onto soda lima glass substrates by spin-coating of pre-prepared ZnO nanoparticles. With conductivity measurements at the nanometer level, the chemical and crystalline structure of the thin films obtained at temperature below 200 °C was investigated by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction, respectively, as a function of the number of the deposed layers and conditions of their deposition, such as deposition rate and the temperature of post-deposition annealing. The increase of the thermal treatment temperature, from 120 to 180 °C, leads to increased values of all thin films, most notably for the thickest sample with three layers deposed at 500 rpm that shows the highest decrease of thickness, indicating the highest compaction. The samples with three layers post-treated at 180 oC show grain growth associated with increased roughness.
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spelling doaj.art-c66316f1d9fd4d29b851bc3dbd7a3f692022-12-21T21:04:12ZengGalati University PressThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science2668-47482668-47562015-06-013821329Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin FilmsA. ALEXA0A. PIMENTEL1T. CALMEIRO2A. ISTRATE3E. FORTUNATO4V. MUȘAT5"Dunarea de Jos" University of GalatiUniversidade Nova de LisboaUniversidade Nova de LisboaNational Institute for R & D in Microtechnologies, BucharestUniversidade Nova de Lisboa"Dunarea de Jos" University of GalatiThe paper presents the investigation by conductive-atomic force microscopy (C-AFM) of the variation of the local conductivity and topography of the transparent ZnO thin films deposed onto soda lima glass substrates by spin-coating of pre-prepared ZnO nanoparticles. With conductivity measurements at the nanometer level, the chemical and crystalline structure of the thin films obtained at temperature below 200 °C was investigated by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction, respectively, as a function of the number of the deposed layers and conditions of their deposition, such as deposition rate and the temperature of post-deposition annealing. The increase of the thermal treatment temperature, from 120 to 180 °C, leads to increased values of all thin films, most notably for the thickest sample with three layers deposed at 500 rpm that shows the highest decrease of thickness, indicating the highest compaction. The samples with three layers post-treated at 180 oC show grain growth associated with increased roughness.https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/1329ZnO nanoparticlestransparent thin filmsspin-coatingmicrostructureconductive atomic force microscopy
spellingShingle A. ALEXA
A. PIMENTEL
T. CALMEIRO
A. ISTRATE
E. FORTUNATO
V. MUȘAT
Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
ZnO nanoparticles
transparent thin films
spin-coating
microstructure
conductive atomic force microscopy
title Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films
title_full Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films
title_fullStr Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films
title_full_unstemmed Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films
title_short Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent Thin Films
title_sort conductive atomic force microscopy investigation of the electrical properties of low temperature deposed zno transparent thin films
topic ZnO nanoparticles
transparent thin films
spin-coating
microstructure
conductive atomic force microscopy
url https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/1329
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