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Polyimide dielectric layer on filaments for organic field effect transistors: choice of solvent, solution composition and dip-coating speed

Lina Rambausek, Els Bruneel UGent, Gilbert De Mey UGent and Lieva Van Langenhove UGent (2014) AUTEX RESEARCH JOURNAL. 14(3). p.121-134
abstract
In today's research, smart textiles is an established topic in both electronics and the textile fields. The concept of producing microelectronics directly on a textile substrate is not a mere idea anymore and several research institutes are working on its realisation. Microelectronics like organic field effect transistor (OFET) can be manufactured with a layered architecture. The production techniques used for this purpose can also be applied on textile substrates. Besides gate, active and contact layers, the isolating or dielectric layer is of high importance in the OFET architecture. Therefore, generating a high quality dielectric layer that is of low roughness and insulating at the same time is one of the fundamental requirements in building microelectronics on textile surfaces. To evaluate its potential, we have studied polyimide as a dielectric layer, dip-coated onto copper-coated polyester filaments. Accordingly, the copper-coated polyester filament was dip-coated from a polyimide solution with two different solvents, 1-methyl-2-pyrrolidone (NMP) and dimethylformaldehyde. A variety of dip-coating speeds, solution concentrations and solvent-solute combinations have been tested. Their effect on the quality of the layer was analysed through microscopy, leak current measurements and atomic force microscopy (AFM). Polyimide dip-coating with polyimide resin dissolved in NMP at a concentration of 15w% in combination with a dip-coating speed of 50 mm/min led to the best results in electrical insulation and roughness. By optimising the dielectric layer's properties, the way is paved for applying the subsequent semi-conductive layer. In further research, we will be working with the organic semiconductor material TIPS-Pentacene.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
THIN-FILM TRANSISTORS, ELECTRONICS, dip-coating, dielectric, polyimide, polyester filament, fibrous, smart textiles, thin film, transistor, GATE
journal title
AUTEX RESEARCH JOURNAL
Autex Res. J.
volume
14
issue
3
pages
121 - 134
Web of Science type
Article
Web of Science id
000343913300001
JCR category
MATERIALS SCIENCE, TEXTILES
JCR impact factor
0.22 (2014)
JCR rank
22/22 (2014)
JCR quartile
4 (2014)
ISSN
1470-9589
DOI
10.2478/aut-2014-0008
language
English
UGent publication?
yes
classification
A1
copyright statement
I have retained and own the full copyright for this publication
id
5776975
handle
http://hdl.handle.net/1854/LU-5776975
date created
2014-12-09 11:09:54
date last changed
2017-03-09 12:22:02
@article{5776975,
  abstract     = {In today's research, smart textiles is an established topic in both electronics and the textile fields. The concept of producing microelectronics directly on a textile substrate is not a mere idea anymore and several research institutes are working on its realisation. Microelectronics like organic field effect transistor (OFET) can be manufactured with a layered architecture. The production techniques used for this purpose can also be applied on textile substrates. Besides gate, active and contact layers, the isolating or dielectric layer is of high importance in the OFET architecture. Therefore, generating a high quality dielectric layer that is of low roughness and insulating at the same time is one of the fundamental requirements in building microelectronics on textile surfaces. To evaluate its potential, we have studied polyimide as a dielectric layer, dip-coated onto copper-coated polyester filaments. Accordingly, the copper-coated polyester filament was dip-coated from a polyimide solution with two different solvents, 1-methyl-2-pyrrolidone (NMP) and dimethylformaldehyde. A variety of dip-coating speeds, solution concentrations and solvent-solute combinations have been tested. Their effect on the quality of the layer was analysed through microscopy, leak current measurements and atomic force microscopy (AFM). Polyimide dip-coating with polyimide resin dissolved in NMP at a concentration of 15w\% in combination with a dip-coating speed of 50 mm/min led to the best results in electrical insulation and roughness. By optimising the dielectric layer's properties, the way is paved for applying the subsequent semi-conductive layer. In further research, we will be working with the organic semiconductor material TIPS-Pentacene.},
  author       = {Rambausek, Lina and Bruneel, Els and De Mey, Gilbert and Van Langenhove, Lieva},
  issn         = {1470-9589},
  journal      = {AUTEX RESEARCH JOURNAL},
  keyword      = {THIN-FILM TRANSISTORS,ELECTRONICS,dip-coating,dielectric,polyimide,polyester filament,fibrous,smart textiles,thin film,transistor,GATE},
  language     = {eng},
  number       = {3},
  pages        = {121--134},
  title        = {Polyimide dielectric layer on filaments for organic field effect transistors: choice of solvent, solution composition and dip-coating speed},
  url          = {http://dx.doi.org/10.2478/aut-2014-0008},
  volume       = {14},
  year         = {2014},
}

Chicago
Rambausek, Lina, Els Bruneel, Gilbert De Mey, and Lieva Van Langenhove. 2014. “Polyimide Dielectric Layer on Filaments for Organic Field Effect Transistors: Choice of Solvent, Solution Composition and Dip-coating Speed.” Autex Research Journal 14 (3): 121–134.
APA
Rambausek, L., Bruneel, E., De Mey, G., & Van Langenhove, L. (2014). Polyimide dielectric layer on filaments for organic field effect transistors: choice of solvent, solution composition and dip-coating speed. AUTEX RESEARCH JOURNAL, 14(3), 121–134.
Vancouver
1.
Rambausek L, Bruneel E, De Mey G, Van Langenhove L. Polyimide dielectric layer on filaments for organic field effect transistors: choice of solvent, solution composition and dip-coating speed. AUTEX RESEARCH JOURNAL. 2014;14(3):121–34.
MLA
Rambausek, Lina, Els Bruneel, Gilbert De Mey, et al. “Polyimide Dielectric Layer on Filaments for Organic Field Effect Transistors: Choice of Solvent, Solution Composition and Dip-coating Speed.” AUTEX RESEARCH JOURNAL 14.3 (2014): 121–134. Print.