Change of molecular ordering in soluble acenes via solvent annealing and its effect on field-effect mobility

Wi Hyoung Lee, Do Hwan Kim, Jeong Ho Cho, Yunseok Jang, Jung Ah Lim, Donghoon Kwak, Kilwon Cho

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

The increase of the molecular ordering and field-effect mobility in triethylsilylethynyl anthradithiophene (TES ADT) thin film transistors by solvent annealing was investigated. X-ray diffraction data revealed that TES ADT molecules crystallize with silyl groups on the substrate surface. After solvent annealing, spherulites were formed and the field-effect mobilities dramatically increased up to 0.43 cm2 V s (over 100-fold) as result of maximized overlap of π electron clouds along the in-plane direction and the formation of a continuous crystal.

Original languageEnglish
Article number092105
JournalApplied Physics Letters
Volume91
Issue number9
DOIs
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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