Hybrid Dispersion Model Characterization of PAZO Azopolymer Thin Films over the Entire Transmittance Spectrum Measured in the UV/VIS/NIR Spectral Region

Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this shortcoming, in this study three PAZO polymer thin films are characterized, with dissimilar thicknesses, on glass substrates using only one UV/V...

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Published inMaterials Vol. 15; no. 23; p. 8617
Main Authors Minkov, Dorian, Nedelchev, Lian, Angelov, George, Marquez, Emilio, Blagoeva, Blaga, Mateev, Georgi, Nazarova, Dimana
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 02.12.2022
MDPI
Subjects
Accuracy
Analysis
Azo polymers
Dielectric films
Dispersion
Glass substrates
innovative dispersion model
Light
Nanocomposites
Nanoparticles
optical characterizatics
Optical properties
PAZO polymer
Photonics
Polymer films
Polymers
Thickness
thin film
Thin films
Transmittance
UV/VIS/NIR transmittance spectra
thin film
innovative dispersion model
optical characterizatics
UV/VIS/NIR transmittance spectra
PAZO polymer
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Abstract Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this shortcoming, in this study three PAZO polymer thin films are characterized, with dissimilar thicknesses, on glass substrates using only one UV/VIS/NIR transmittance spectrum ( ) per sample and an original hybrid dispersion model (HDM). HDM is based on the Tauc-Lorentz model, the new amorphous dispersion formula, the Tauc-Lorentz-Urbach model of Foldyna and the Tauc-Lorentz-Urbach model of Rodriguez. HDM with two oscillators is employed in characterizations of the PAZO polymer films in the range [300, 2500] nm, whereby the root-mean-square deviation ( ) of the fitted transmittance spectrum with respect to ( ) does not exceed 1.6 × 10 . Decreasing by 2.3% to 94.4% is demonstrated by employing HDM compared with the above mentioned four popular dispersion models, for each one of the studied films. HDM is applicable to amorphous films independent of their thickness as well as to cases of non-transparent substrate.
AbstractList Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this shortcoming, in this study three PAZO polymer thin films are characterized, with dissimilar thicknesses, on glass substrates using only one UV/VIS/NIR transmittance spectrum T(λ) per sample and an original hybrid dispersion model (HDM). HDM is based on the Tauc–Lorentz model, the new amorphous dispersion formula, the Tauc–Lorentz–Urbach model of Foldyna and the Tauc–Lorentz–Urbach model of Rodriguez. HDM with two oscillators is employed in characterizations of the PAZO polymer films in the range [300, 2500] nm, whereby the root-mean-square deviation (RMSD) of the fitted transmittance spectrum with respect to T(λ) does not exceed 1.6 × 10−3. Decreasing RMSD by 2.3% to 94.4% is demonstrated by employing HDM compared with the above mentioned four popular dispersion models, for each one of the studied films. HDM is applicable to amorphous films independent of their thickness as well as to cases of non-transparent substrate.
Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this shortcoming, in this study three PAZO polymer thin films are characterized, with dissimilar thicknesses, on glass substrates using only one UV/VIS/NIR transmittance spectrum ( ) per sample and an original hybrid dispersion model (HDM). HDM is based on the Tauc-Lorentz model, the new amorphous dispersion formula, the Tauc-Lorentz-Urbach model of Foldyna and the Tauc-Lorentz-Urbach model of Rodriguez. HDM with two oscillators is employed in characterizations of the PAZO polymer films in the range [300, 2500] nm, whereby the root-mean-square deviation ( ) of the fitted transmittance spectrum with respect to ( ) does not exceed 1.6 × 10 . Decreasing by 2.3% to 94.4% is demonstrated by employing HDM compared with the above mentioned four popular dispersion models, for each one of the studied films. HDM is applicable to amorphous films independent of their thickness as well as to cases of non-transparent substrate.
Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this shortcoming, in this study three PAZO polymer thin films are characterized, with dissimilar thicknesses, on glass substrates using only one UV/VIS/NIR transmittance spectrum T(λ) per sample and an original hybrid dispersion model (HDM). HDM is based on the Tauc-Lorentz model, the new amorphous dispersion formula, the Tauc-Lorentz-Urbach model of Foldyna and the Tauc-Lorentz-Urbach model of Rodriguez. HDM with two oscillators is employed in characterizations of the PAZO polymer films in the range [300, 2500] nm, whereby the root-mean-square deviation (RMSD) of the fitted transmittance spectrum with respect to T(λ) does not exceed 1.6 × 10[sup.−3]. Decreasing RMSD by 2.3% to 94.4% is demonstrated by employing HDM compared with the above mentioned four popular dispersion models, for each one of the studied films. HDM is applicable to amorphous films independent of their thickness as well as to cases of non-transparent substrate.
Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this shortcoming, in this study three PAZO polymer thin films are characterized, with dissimilar thicknesses, on glass substrates using only one UV/VIS/NIR transmittance spectrum T ( λ ) per sample and an original hybrid dispersion model (HDM). HDM is based on the Tauc–Lorentz model, the new amorphous dispersion formula, the Tauc–Lorentz–Urbach model of Foldyna and the Tauc–Lorentz–Urbach model of Rodriguez. HDM with two oscillators is employed in characterizations of the PAZO polymer films in the range [300, 2500] nm, whereby the root-mean-square deviation ( RMSD ) of the fitted transmittance spectrum with respect to T ( λ ) does not exceed 1.6 × 10 −3 . Decreasing RMSD by 2.3% to 94.4% is demonstrated by employing HDM compared with the above mentioned four popular dispersion models, for each one of the studied films. HDM is applicable to amorphous films independent of their thickness as well as to cases of non-transparent substrate.
Audience Academic
Author Nedelchev, Lian
Minkov, Dorian
Nazarova, Dimana
Mateev, Georgi
Angelov, George
Marquez, Emilio
Blagoeva, Blaga
AuthorAffiliation 2 Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
3 Department of Microelectronics, Technical University of Sofia, 1000 Sofia, Bulgaria
1 College of Energy and Electronics, Technical University of Sofia, 2140 Botevgrad, Bulgaria
4 Faculty of Science, Department of Condensed-Matter Physics, University of Cadiz, 11510 Puerto Real, Cadiz, Spain
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/36500112$$D View this record in MEDLINE/PubMed
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CitedBy_id crossref_primary_10_3390_nano13172407
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Keywords thin film
innovative dispersion model
optical characterizatics
UV/VIS/NIR transmittance spectra
PAZO polymer
Language English
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Snippet Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this...
SourceID doaj
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StartPage 8617
SubjectTerms Accuracy
Analysis
Azo polymers
Dielectric films
Dispersion
Glass substrates
innovative dispersion model
Light
Nanocomposites
Nanoparticles
optical characterizatics
Optical properties
PAZO polymer
Photonics
Polymer films
Polymers
Thickness
thin film
Thin films
Transmittance
UV/VIS/NIR transmittance spectra
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Title Hybrid Dispersion Model Characterization of PAZO Azopolymer Thin Films over the Entire Transmittance Spectrum Measured in the UV/VIS/NIR Spectral Region
URI https://www.ncbi.nlm.nih.gov/pubmed/36500112
https://www.proquest.com/docview/2748556313
https://search.proquest.com/docview/2753307200
https://pubmed.ncbi.nlm.nih.gov/PMC9737755
https://doaj.org/article/b428f757294a4222847073edc9bdee39
Volume 15
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