Room-temperature self-organizing characteristics of soluble acene field-effect transistors
SCIE
SCOPUS
- Title
- Room-temperature self-organizing characteristics of soluble acene field-effect transistors
- Authors
- Lee, WH; Lim, JA; Kim, DH; Cho, JH; Jang, Y; Kim, YH; Han, JI; Cho, K
- Date Issued
- 2008-02-22
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- We report on the room-temperature self-organizing characteristics of thin films of the organic small-molecule semiconductor triethylsilylethynyl-anthradithiophene (TES-ADT) and its effect on the electrical properties of TES-ADT-based field-effect transistors (FETs). The morphology of TES-ADT films changed dramatically with time, and the field-effect mobility of FETs based on these films increased about 100-fold after seven days as a result of the change in molecular orientation from a tilted structure in the as-prepared film to a well-oriented structure in the final film. We found that the molecular movement is large enough to induce a conformational. change to an energetically stable state in spin-coated TES-ADT films, because TES-ADT has a low glass-transition temperature (around room temperature), Our findings demonstrate that organic small-molecule semiconductors that exhibit a low crystallinity immediately after spin coating can be changed into highly crystalline structures by spontaneous self-organization of the molecules at room temperature, which results in improved electrical properties of FETs based on these semiconductors.
- Keywords
- THIN-FILM TRANSISTORS; CARRIER MOBILITY; PENTACENE; POLYMERS; SEMICONDUCTORS; OPPORTUNITIES; PERFORMANCE; TRANSPORT; CRYSTALS; VOLTAGE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22844
- DOI
- 10.1002/adfm.200701087
- ISSN
- 1616-301X
- Article Type
- Article
- Citation
- ADVANCED FUNCTIONAL MATERIALS, vol. 18, no. 4, page. 560 - 565, 2008-02-22
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