Optical properties of zinc phthalocyanine thin films prepared by pulsed laser deposition
Result description
ZnPc thin films were prepared by pulsed laser deposition (KrF laser, ? = 248 nm, ? = 5 ns, f = 50 Hz) on suprasil substrates in vacuum. Optical properties in UV?Vis spectral region were analyzed as functions of laser fluence from 40 to 100 mJ/cm2 by spectrophotometric and spectral ellipsometry measurements. The spectral ellipsometry data were treated using a three-layer model (substrate, film, roughness). The best results of data fitting were obtained when Q band was characterized by two Lorentz oscillators, while two Gaussian oscillators were used for B and C band fitting. We derived the band gap using Tauc plot considering ZnPc a direct band gap semiconductor. The band gap values were found decreasing from 3.13 to 3.09 eV with increasing laser fluence, which might be related with formation of trapping sites at higher fluence
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/60461373:22340/14:43897868
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Optical properties of zinc phthalocyanine thin films prepared by pulsed laser deposition
Original language description
ZnPc thin films were prepared by pulsed laser deposition (KrF laser, ? = 248 nm, ? = 5 ns, f = 50 Hz) on suprasil substrates in vacuum. Optical properties in UV?Vis spectral region were analyzed as functions of laser fluence from 40 to 100 mJ/cm2 by spectrophotometric and spectral ellipsometry measurements. The spectral ellipsometry data were treated using a three-layer model (substrate, film, roughness). The best results of data fitting were obtained when Q band was characterized by two Lorentz oscillators, while two Gaussian oscillators were used for B and C band fitting. We derived the band gap using Tauc plot considering ZnPc a direct band gap semiconductor. The band gap values were found decreasing from 3.13 to 3.09 eV with increasing laser fluence, which might be related with formation of trapping sites at higher fluence
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Physics A - Materials Science & Processing
ISSN
0947-8396
e-ISSN
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Volume of the periodical
117
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
5
Pages from-to
377-381
UT code for WoS article
000342281800060
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2014