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Organic Thin Film Transistors Based on 2,3-Dimethylpentacene and 2,3-Dimethyltetracene.
- Source :
- Journal of the Chinese Chemical Society; Dec2012, Vol. 59 Issue 12, p1504-1511, 8p
- Publication Year :
- 2012
-
Abstract
- 2,3-Dimethylpentacene (DMP) and 2,3-dimethyltetracene (DMT) were synthesized, characterized and employed as the channel material in the fabrication of thin-film transistors. The two methyl groups increase the chemical stability of the compounds versus the pristine acene analogues. The crystals maintain herringbone-like molecular packing, whereas the weak dipole associated with the unsymmetrical molecule induces an anti-parallel alignment among the neighbors. This structural motif favors layered film growth on SiO<subscript>2</subscript>/Si surface. Thin film transistors prepared on SiO<subscript>2</subscript>/Si and n-nonyltrichlorosilane-modified SiO<subscript>2</subscript>/Si at different substrate temperatures were compared. DMP-based transistors prepared on rubbed n-nonyltrichlorosilane-modified SiO<subscript>2</subscript>/Si substrate gave the highest field-effect mobility of 0.46 cm<superscript>2</superscript>/Vs, whereas DMT-based transistor gave a mobility of 0.028 cm<superscript>2</superscript>/Vs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00094536
- Volume :
- 59
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of the Chinese Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- 83711058
- Full Text :
- https://doi.org/10.1002/jccs.201200383