The Influence of Aminoalcohols on ZnO Films’ Structure

Preparing structures with the sol-gel method often requires control of the basal plane of crystallites, crystallite structures, or the appearance of the voids. One of the critical factors in the formation of a layer are additives, such as aminoalcohols, which increase the control of the sol formatio...

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Bibliographic Details
Published in:Gels 2022-08, Vol.8 (8), p.512
Main Authors: Nowak, Ewelina, Chłopocka, Edyta, Szybowicz, Mirosław, Stachowiak, Alicja, Koczorowski, Wojciech, Piechowiak, Daria, Miklaszewski, Andrzej
Format: Article
Language:English
Subjects:
Additives
Alkalinity
aminoalcohols
Analysis
Basal plane
Boiling points
Crystal defects
Crystallites
Crystals
DEA
Diethanolamine
Ethanolamines
Ligands
Low temperature
MEA
Monoethanolamine (MEA)
Morphology
Optical properties
Photoluminescence
Photomicrographs
Raman
Raman spectroscopy
sol-gel
Sol-gel processes
Solvents
Structure
Substrates
Zinc oxide
Zinc oxides
ZnO
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Summary:Preparing structures with the sol-gel method often requires control of the basal plane of crystallites, crystallite structures, or the appearance of the voids. One of the critical factors in the formation of a layer are additives, such as aminoalcohols, which increase the control of the sol formation reaction. Since aminoalcohols differ in boiling points and alkalinity, their selection may play a significant role in the dynamics of structure formation. The main aim of this work is to examine the properties of ZnO layers grown using different aminoalcohols at different concentration rates. The layers were grown on various substrates, which would provide additional information on the behavior of the layers on a specific substrate, and the mixture was annealed at a relatively low temperature (400 °C). The research was conducted using monoethanolamine (MEA) and diethanolamine (DEA). The aminoalcohols were added to the solutions in equal concentrations. The microscopic image of the structure and the size of the crystallites were determined using micrographs. X-ray diffractometry and Raman spectroscopy were used for structural studies, phase analysis and to establish the purity of the obtained films. UV-vis absorption and photoluminescence were used to evaluate structural defects. This paper shows the influence of the stabilizer on the morphology of samples and the influence of the morphology and structure on the optical properties. The above comparison may allow the preparation of ZnO samples for specific applications.
ISSN:2310-2861
2310-2861
DOI:10.3390/gels8080512