Journal
THIN SOLID FILMS
Volume 518, Issue 2, Pages 489-492Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2009.07.005
Keywords
Organic semiconducting oligomers; Thiophene/phenylene co-oligomers; Train sublimation; Film morphology; Organic field-effect transistors; Light emission
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [17067009, 20655041]
- Grants-in-Aid for Scientific Research [17067009, 20655041] Funding Source: KAKEN
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We have purified oligomer semiconductors through vacuum sublimation and compared the film morphologies and the device performance of the purified materials with those of unpurified ones. We fabricated melt-molding films and thin film organic field-effect transistors (OFETs) using both the purified and unpurified oligomers. Comparing morphologies of the molten films we found regular arrangements of the crystal domains for the purified oligomers. Furthermore, the purified materials show definite light emission from the OFET devices. (C) 2009 Elsevier B.V. All rights reserved.
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