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Title: XRay Study of Transfer Printed Pentacene Thin Films

Abstract

We investigated the structural properties and transfer properties of pentacene thin films fabricated by thermal deposition and transfer printing onto SiO2 and plastic substrates, respectively. The dependence of the crystallite size on the printing time, temperature and pressure were measured. The increases of crystalline size were observed when pentacene thin films were printed under specific conditions, e.g. 120 deg. C and 600 psi and can be correlated with the improvement of the field effect mobility of pentacene thin-film transistors.

Authors:
;  [1]; ;  [2];  [3]
  1. Washington University in St. Louis, Center for Materials Innovation, Department of Physics, St. Louis, Missouri 63130 (United States)
  2. University of Maryland, Department of Physics, College Park, Maryland 20742 (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
21055054
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 893; Journal Issue: 1; Conference: ICPS 2006: 28. international conference on the physics of semiconductors, Vienna (Austria), 24-28 Jul 2006; Other Information: DOI: 10.1063/1.2729921; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARRIER MOBILITY; CRYSTAL STRUCTURE; DEPOSITION; ORGANIC SEMICONDUCTORS; PENTACENE; PLASTICS; SUBSTRATES; THIN FILMS; TRANSISTORS; X-RAY DIFFRACTION

Citation Formats

Shao, Y., Solin, S. A., Hines, D. R., Williams, E. D., and Laboratory for Physical Sciences, College Park, Maryland 20742. XRay Study of Transfer Printed Pentacene Thin Films. United States: N. p., 2007. Web. doi:10.1063/1.2729921.
Shao, Y., Solin, S. A., Hines, D. R., Williams, E. D., & Laboratory for Physical Sciences, College Park, Maryland 20742. XRay Study of Transfer Printed Pentacene Thin Films. United States. doi:10.1063/1.2729921.
Shao, Y., Solin, S. A., Hines, D. R., Williams, E. D., and Laboratory for Physical Sciences, College Park, Maryland 20742. Tue . "XRay Study of Transfer Printed Pentacene Thin Films". United States. doi:10.1063/1.2729921.
@article{osti_21055054,
title = {XRay Study of Transfer Printed Pentacene Thin Films},
author = {Shao, Y. and Solin, S. A. and Hines, D. R. and Williams, E. D. and Laboratory for Physical Sciences, College Park, Maryland 20742},
abstractNote = {We investigated the structural properties and transfer properties of pentacene thin films fabricated by thermal deposition and transfer printing onto SiO2 and plastic substrates, respectively. The dependence of the crystallite size on the printing time, temperature and pressure were measured. The increases of crystalline size were observed when pentacene thin films were printed under specific conditions, e.g. 120 deg. C and 600 psi and can be correlated with the improvement of the field effect mobility of pentacene thin-film transistors.},
doi = {10.1063/1.2729921},
journal = {AIP Conference Proceedings},
number = 1,
volume = 893,
place = {United States},
year = {Tue Apr 10 00:00:00 EDT 2007},
month = {Tue Apr 10 00:00:00 EDT 2007}
}
  • Real-time synchrotron x-ray scattering in the anti-Bragg configuration was used to monitor the dynamics of pentacene film growth on inert substrates. A distributed-growth model, according to which pentacene molecules adsorbed on the nth layer can either nucleate and contribute to the growth of the (n+1)th layer or transfer downward and contribute to the growth of the nth layer, gave a good description of the data. For molecules adsorbed on the first and second layers, the probability of downward transfer was found to be dependent on the substrate, and independent of temperature within the range from 25 to 60 deg. C.more » For films grown on SiO{sub 2}, an Ehrlich-Schwoebel barrier of the order of 70 meV dominated downward transfer of pentacene molecules in layers away from the substrate. For films grown on an alkylated self-assembled monolayer, significant desorption of pentacene molecules from the substrate at elevated temperatures forced the growth mode toward the three-dimensional limit.« less
  • 3,16-bis triisopropylsilylethynyl (Pentacene) (TIPS-Pentacene) compactable interface property is important in order to have a good arrangement of molecular structure. Comparison for TIPS-Pentacene deposited between two different surface layers conducted. 0.1wt% TIPS-Pentacene diluted in chloroform were deposited onto poly(methylmeaclyrate) (PMMA) layered transparent substrates using slide coating method. X-ray diffraction (XRD) used to determine crystallinity of thin films. Series of (00l) diffraction peaks obtained with sharp first peaks (001) for TIPS-Pentacene deposited onto PMMA layer at 5.35° and separation of 16.3 Å. Morphology and surface roughness were carried out using scanning electron microscope (SEM) and surface profilemeter LS500, respectively.TIPS-Pentacene deposited onto PMMAmore » layer formed needled-like-shape grains with 10.26 nm surface roughness. These properties were related as thin film formed and its surface roughness plays important role towards good mobility devices.« less