Cargando…

Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films

ZnO porous thin films were synthesized as antireflection coatings via a sol–gel dip-coating method with polyethylene glycol (PEG1000) utilized as a polymeric porogen on alumina transparent ceramics. The pore formation mechanism of the ZnO porous thin films was proposed through thermal and Fourier tr...

Descripción completa

Detalles Bibliográficos
Autores principales: Xu, Dong, Yu, Qian, Chen, Taiyun, Zhong, Sujuan, Ma, Jia, Bao, Li, Zhang, Lei, Zhao, Feiwen, Du, Sanming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213708/
https://www.ncbi.nlm.nih.gov/pubmed/30262724
http://dx.doi.org/10.3390/ma11101840
_version_ 1783367832893915136
author Xu, Dong
Yu, Qian
Chen, Taiyun
Zhong, Sujuan
Ma, Jia
Bao, Li
Zhang, Lei
Zhao, Feiwen
Du, Sanming
author_facet Xu, Dong
Yu, Qian
Chen, Taiyun
Zhong, Sujuan
Ma, Jia
Bao, Li
Zhang, Lei
Zhao, Feiwen
Du, Sanming
author_sort Xu, Dong
collection PubMed
description ZnO porous thin films were synthesized as antireflection coatings via a sol–gel dip-coating method with polyethylene glycol (PEG1000) utilized as a polymeric porogen on alumina transparent ceramics. The pore formation mechanism of the ZnO porous thin films was proposed through thermal and Fourier transformation infrared spectrometer (FTIR) analyses. The effect of sol concentrations on crystal structure, microstructure, and optical properties was also discussed. The experiment results indicated that all the ZnO thin films exhibited a hexagonal wurtzite structure with their preferred orientation along a (0 0 2) plane by X-ray diffraction (XRD) patterns. The grain size of the films increased from 30.5 to 37.4 nm with the sol concentration ranging from 0.2 to 1.0 M. Furthermore, scanning electron microscopy (SEM) images show that the pores on the surface were observed to first decrease as the sol concentration increased and then to disappear as the sol concentration continued to increase. The UV spectrum presents a maximum transmittance of 93.5% at a wavelength of 600 nm at a concentration of 0.6 M, which will be helpful in the practical applications of ZnO porous film on alumina transparent ceramic substrates. The pore formation mechanism of ZnO porous thin films can be ascribed to ring-like network structures between the PEG1000 and zinc oligomers under the phase separation effect.
format Online
Article
Text
id pubmed-6213708
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-62137082018-11-14 Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films Xu, Dong Yu, Qian Chen, Taiyun Zhong, Sujuan Ma, Jia Bao, Li Zhang, Lei Zhao, Feiwen Du, Sanming Materials (Basel) Article ZnO porous thin films were synthesized as antireflection coatings via a sol–gel dip-coating method with polyethylene glycol (PEG1000) utilized as a polymeric porogen on alumina transparent ceramics. The pore formation mechanism of the ZnO porous thin films was proposed through thermal and Fourier transformation infrared spectrometer (FTIR) analyses. The effect of sol concentrations on crystal structure, microstructure, and optical properties was also discussed. The experiment results indicated that all the ZnO thin films exhibited a hexagonal wurtzite structure with their preferred orientation along a (0 0 2) plane by X-ray diffraction (XRD) patterns. The grain size of the films increased from 30.5 to 37.4 nm with the sol concentration ranging from 0.2 to 1.0 M. Furthermore, scanning electron microscopy (SEM) images show that the pores on the surface were observed to first decrease as the sol concentration increased and then to disappear as the sol concentration continued to increase. The UV spectrum presents a maximum transmittance of 93.5% at a wavelength of 600 nm at a concentration of 0.6 M, which will be helpful in the practical applications of ZnO porous film on alumina transparent ceramic substrates. The pore formation mechanism of ZnO porous thin films can be ascribed to ring-like network structures between the PEG1000 and zinc oligomers under the phase separation effect. MDPI 2018-09-27 /pmc/articles/PMC6213708/ /pubmed/30262724 http://dx.doi.org/10.3390/ma11101840 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Dong
Yu, Qian
Chen, Taiyun
Zhong, Sujuan
Ma, Jia
Bao, Li
Zhang, Lei
Zhao, Feiwen
Du, Sanming
Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films
title Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films
title_full Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films
title_fullStr Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films
title_full_unstemmed Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films
title_short Effects of PEG1000 and Sol Concentration on the Structural and Optical Properties of Sol–Gel ZnO Porous Thin Films
title_sort effects of peg1000 and sol concentration on the structural and optical properties of sol–gel zno porous thin films
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213708/
https://www.ncbi.nlm.nih.gov/pubmed/30262724
http://dx.doi.org/10.3390/ma11101840
work_keys_str_mv AT xudong effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT yuqian effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT chentaiyun effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT zhongsujuan effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT majia effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT baoli effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT zhanglei effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT zhaofeiwen effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms
AT dusanming effectsofpeg1000andsolconcentrationonthestructuralandopticalpropertiesofsolgelznoporousthinfilms