Photoreactive pi-conjugated star-shaped molecules for the organic field-effect transistor
- Authors
- Hoang, Mai Ha; Cho, Min Ju; Kim, Dae Cheol; Kim, Kyung Hwan; Shin, Ji Won; Cho, Mi Yeon; Joo, Jin-soo; Choi, Dong Hoon
- Issue Date
- 7월-2009
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Photoreactive; Organic field-effect transistor; Star-shaped molecule; Carrier mobility
- Citation
- ORGANIC ELECTRONICS, v.10, no.4, pp.607 - 617
- Indexed
- SCIE
SCOPUS
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 10
- Number
- 4
- Start Page
- 607
- End Page
- 617
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/119749
- DOI
- 10.1016/j.orgel.2009.02.021
- ISSN
- 1566-1199
- Abstract
- A number of semiconducting organic molecules capable of wet processing exhibit high carrier mobility and current modulation. In this work, we synthesized photopatternable pi-conjugated star-shaped molecules and characterized their physical properties. The solubility of the synthesized molecules is very good for solution processing. The synthesized organic semiconducting multi-branched molecules are capable of photopatterning by virtue of photopolymerization of the reactive pentadienyl end groups. The transistor devices using these molecules provided a field-effect mobility of 1.3(+/-0.2) x 10(-3)-3.7(+/-0.5) x 10(-3) cm(2) V-1 s(-1) as well as a high current on/off ratio (I-on/off > 10(3)) and a low threshold voltage. In the case of the photoreactive star-shaped conjugated molecule HP2P, it was found that field-effect mobility was maintained even after the photocrosslinking process. This result can be used in the design of photo patternable semiconductor molecules for thin-film transistor electronic applications. (C) 2009 Elsevier B.V. All rights reserved.
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Collections - College of Science > Department of Physics > 1. Journal Articles
- College of Science > Department of Chemistry > 1. Journal Articles
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