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مجله مواد الکترونیکی 2013
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • composite semiconductor material of carbon nanotubes and poly[5,5′-bis(3-dodecyl-2-thienyl)-2,2′-bithiophene] for high-performance organic thin-film transistors

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 838
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a nonpercolating network of non-covalently functionalized single-walled carbon nanotubes was embedded within air-stable poly[5,5′-bis(3-dodecyl-2-thienyl)-2,2′-bithiophene] (pqt-12) thin films for the purpose of enhancing the field-effect mobility in thin-film transistors. the host polymer was used to stabilize the nanotubes in suspension through π-orbital overlap caused by simple application of ultrasonication. the stable nanotube suspension was cast into two different device architectures, both of which exhibited excellent on/off ratios ranging from 105 to 106 and dramatically improved mobilities compared with pristine pqt-12 semiconductor. a single-layer film with nanotubes embedded throughout was easy to fabricate and had mobility up to 0.34 cm2/vs, an enhancement of over 3× compared with pqt-12. placing the nanotubes closer to the dielectric surface in a dual-layer approach resulted in a mobility improvement of up to six times (0.58 cm2/vs). the effects of the nanotube content on the polymer interaction within the suspension, film morphology, and electrical properties were investigated as well.

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