The influence of thermal annealing (in air and nitrogen at ambient pressure) on optical properties
of pentacene films, well-known material widely used in organic electronic devices, was studied. Pentacene films, whose thickness varies an order of magnitude (30 – 300 nm) depending on the position on the substrate, were polycrystalline at all thicknesses. Raman and UV-vis absorption spectra depend on the position on film implies changes of the film structure with the thickness. These spectra are not largely affected by annealing if it is not performed in air at temperatures higher than 100°C. Prolonged annealing in air, at temperatures higher than 100°C, leads to formation of nano- and micro-scale rod-shaped structures on film surface. Based on scanning electron microscopy measurements, it is supposed that these structures are crystalline. Their UV-vis absorbance indicates that they are composed of more than one species of oxidized pentacene molecules, including 6,13-pentacenequinone. F...urther study is necessary to precisely determine composition and structure of micro-rods, as well as the mechanism of their formation.
Keywords:
oxidized pentacene / nano and micro rods and crystals / small organic molecule thin films / physical vapor deposition / UV-vis and Raman spectroscopy / AFM and SEM characterization
Source:
ADVANCED CERAMICS AND APPLICATION V - PROGRAM AND THE BOOK OF ABSTRACTS, 2016, 80-
Serbian Ceramic Society Conference
ADVANCED CERAMICS AND APPLICATION V
New Frontiers in Multifunctional Material Science and Processing
Serbian Academy of Sciences and Arts, Knez Mihailova 35
Serbia, Belgrade, 21st-23rd September 2016
TY - JOUR
AU - Tomović, Aleksandar
AU - Zikic, Radomir
AU - Savić, Jelena J.
AU - Bakić, Nataša Lj.
AU - Jovanović, Vladimir P.
PY - 2016
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1901
AB - The influence of thermal annealing (in air and nitrogen at ambient pressure) on optical properties
of pentacene films, well-known material widely used in organic electronic devices, was studied. Pentacene films, whose thickness varies an order of magnitude (30 – 300 nm) depending on the position on the substrate, were polycrystalline at all thicknesses. Raman and UV-vis absorption spectra depend on the position on film implies changes of the film structure with the thickness. These spectra are not largely affected by annealing if it is not performed in air at temperatures higher than 100°C. Prolonged annealing in air, at temperatures higher than 100°C, leads to formation of nano- and micro-scale rod-shaped structures on film surface. Based on scanning electron microscopy measurements, it is supposed that these structures are crystalline. Their UV-vis absorbance indicates that they are composed of more than one species of oxidized pentacene molecules, including 6,13-pentacenequinone. Further study is necessary to precisely determine composition and structure of micro-rods, as well as the mechanism of their formation.
PB - Serbian Ceramic Society
T2 - ADVANCED CERAMICS AND APPLICATION V - PROGRAM AND THE BOOK OF ABSTRACTS
T1 - Micro-rods of oxidized pentacene obtained by thermal annealing in air of pentacene thin films
SP - 80
UR - https://hdl.handle.net/21.15107/rcub_rimsi_1901
ER -
@article{
author = "Tomović, Aleksandar and Zikic, Radomir and Savić, Jelena J. and Bakić, Nataša Lj. and Jovanović, Vladimir P.",
year = "2016",
abstract = "The influence of thermal annealing (in air and nitrogen at ambient pressure) on optical properties
of pentacene films, well-known material widely used in organic electronic devices, was studied. Pentacene films, whose thickness varies an order of magnitude (30 – 300 nm) depending on the position on the substrate, were polycrystalline at all thicknesses. Raman and UV-vis absorption spectra depend on the position on film implies changes of the film structure with the thickness. These spectra are not largely affected by annealing if it is not performed in air at temperatures higher than 100°C. Prolonged annealing in air, at temperatures higher than 100°C, leads to formation of nano- and micro-scale rod-shaped structures on film surface. Based on scanning electron microscopy measurements, it is supposed that these structures are crystalline. Their UV-vis absorbance indicates that they are composed of more than one species of oxidized pentacene molecules, including 6,13-pentacenequinone. Further study is necessary to precisely determine composition and structure of micro-rods, as well as the mechanism of their formation.",
publisher = "Serbian Ceramic Society",
journal = "ADVANCED CERAMICS AND APPLICATION V - PROGRAM AND THE BOOK OF ABSTRACTS",
title = "Micro-rods of oxidized pentacene obtained by thermal annealing in air of pentacene thin films",
pages = "80",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1901"
}
Tomović, A., Zikic, R., Savić, J. J., Bakić, N. Lj.,& Jovanović, V. P.. (2016). Micro-rods of oxidized pentacene obtained by thermal annealing in air of pentacene thin films. in ADVANCED CERAMICS AND APPLICATION V - PROGRAM AND THE BOOK OF ABSTRACTS
Serbian Ceramic Society., 80.
https://hdl.handle.net/21.15107/rcub_rimsi_1901
Tomović A, Zikic R, Savić JJ, Bakić NL, Jovanović VP. Micro-rods of oxidized pentacene obtained by thermal annealing in air of pentacene thin films. in ADVANCED CERAMICS AND APPLICATION V - PROGRAM AND THE BOOK OF ABSTRACTS. 2016;:80.
https://hdl.handle.net/21.15107/rcub_rimsi_1901 .
Tomović, Aleksandar, Zikic, Radomir, Savić, Jelena J., Bakić, Nataša Lj., Jovanović, Vladimir P., "Micro-rods of oxidized pentacene obtained by thermal annealing in air of pentacene thin films" in ADVANCED CERAMICS AND APPLICATION V - PROGRAM AND THE BOOK OF ABSTRACTS (2016):80,
https://hdl.handle.net/21.15107/rcub_rimsi_1901 .
