Solution-processed organic micro crystal transistor based on tetraceno[2,3-b]thiophene from a monoketone precursor

Motonori Watanabe, Ting Han Chao, Shun Wei Liu, Ching Ting Chien, Yuan Jay Chang, Chih Hsien Yuan, Kuan Chun Huang, Shu Hua Chien, Teruo Shinmyozu, Tahsin J. Chow

研究成果: ジャーナルへの寄稿学術誌査読

9 被引用数 (Scopus)


The synthesis, thermal and photophysical properties, and solution-processed organic field effect transistors fabricated from a soluble tetraceno[2,3-b] thiophene precursor 1. Compound 1 was synthesised in 9.8% through 6 steps. The TGA profiles showed that a 9.1% weight loss occurred at ca. 130 °C, corresponding to an expulsion of a carbonyl group. The photogeneration of tetraceno[2,3-b]thiophene from 1 in the solution state could be fitted into a first-order rate law with a rate constant (k) of 2.05 × 10-2 s-1 in a yield of 55.6% (±0.9%) under a 1.25 mW cm -2 UV lamp. The platelet micro crystals of 1, formed either by heat or by light, were confirmed by XRD to be identical to a simulated one from reported X-ray crystallographic data. The field effect mobility across a single crystal was measured to be 4.75 × 10-1 cm2 V -1 s-1 with on/off ratio 105. The high purity of single crystals formed both by heat and by light are supported by an EPR analysis. This is the first report of a solution-processed single-crystal OFET of linear acenes without bulky substituent groups. In another experiment, the devices made directly from an amorphous thin film of 1, prepared by spin-coating, exhibited a charge mobility 3.0 × 10-4 cm 2 V-1 s-1 with on/off ratio 103.

ジャーナルJournal of Materials Chemistry
出版ステータス出版済み - 8月 14 2011

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料化学


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