A flexible n-type organic semiconductor for optoelectronics

Gui, Ke, Mutkins, Karyn, Schwenn, Paul E., Krueger, Karsten B., Pivrikas, Almantas, Wolfer, Pascal, Stutzmann, Natalie S., Burn, Paul L. and Meredith, Paul (2012) A flexible n-type organic semiconductor for optoelectronics. Journal of Materials Chemistry, 22 5: 1800-1806. doi:10.1039/c1jm14089b

Author Gui, Ke
Mutkins, Karyn
Schwenn, Paul E.
Krueger, Karsten B.
Pivrikas, Almantas
Wolfer, Pascal
Stutzmann, Natalie S.
Burn, Paul L.
Meredith, Paul
Title A flexible n-type organic semiconductor for optoelectronics
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
Publication date 2012
Year available 2011
Sub-type Article (original research)
DOI 10.1039/c1jm14089b
Open Access Status Not Open Access
Volume 22
Issue 5
Start page 1800
End page 1806
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2012
Language eng
Formatted abstract
n-Type organic semiconductors are important for a range of optoelectronic applications including organic photovoltaic devices, light-emitting diodes, and field effect transistors (FETs). In spite of this clear motivation there has been significantly less development of n-type compounds relative to p-type systems. We have developed a simple, small molecule n-type material, 2-[(7-{9,9-di-n-propyl-9H-fluoren-2-yl}benzo[c][1,2,5]thiadiazol-4-yl)methylene]malononitrile (K12), that can be processed either by spin-coating from solution or evaporation in vacuum. The thermal properties of K12 enable the film morphology to be controlled at easily accessible temperatures allowing the charge mobility to be tuned over two orders of magnitude. The electron mobility in the films was found to be independent of the initial processing conditions (solution or evaporation). The electron mobility measured in a FET configuration was of the order of 10-3 cm2 V-1 s-1 for films prepared via either processing method whilst Photoinduced Charge Extraction in Linearly Increasing Voltage (PhotoCELIV) gave a mobility of order 10-4 cm2 V-1 s-1.   
Keyword Heterojunction Solar Cells
Field Effect Transistors
Effect Mobility
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes First published on the web 05 Dec 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2012 Collection
School of Chemistry and Molecular Biosciences
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Citation counts: TR Web of Science Citation Count  Cited 14 times in Thomson Reuters Web of Science Article | Citations
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