有機薄膜半導體(Organic thin-flim transistors, OTFTs)擁有容易製造的潛在優勢，結構簡單，製程溫度低，和可彎曲的特性，未來可取代矽電晶體應用於在驅動各式各樣的軟性顯示器。本研究以聚(3-己烷基噻吩) (Poly(3-hexythiophene), P3HT)作為有機半導體，製作有機薄膜電晶體，研究P3HT的薄膜電晶體在不同彎曲的狀態下，其光電特性在不同的彎曲曲率下變化的情形。
　　本論文展示出使用水性聚脲酯(Polyurethane, PU)當作可彎曲式P3HT的有機薄膜電晶體之絕緣層，元件載子遷移率可達1.9×10^-2 cm^2/Vs，並在不同的彎曲曲率下量測電流特性與拉曼光譜圖。從研究結果中發現元件在不同的彎曲曲率下有良好的穩定特性，這個穩定的電流特性對一個驅動元件是很重要的條件；當一個可彎曲的顯示器面板，在被彎曲之後，薄膜電晶體的電性仍能保持，而不會去影響到映像點的區塊，可使顯示器保持原有的品質。

　　Organic thin film transistors (OTFTs) with advantages of easy processing, simple structure, low process temperature, and flexibility can be a candidate as the driver in many kind flexible displays. In this thesis, poly(3-hexythiophene) (P3HT) was used as organic semiconductor to fabricate OTFT on the flexible substrate. The optoelectronic characteristics of OTFTs were studying under various bending conditions.
　　This paper exhibits that the P3HT-based OTFT used polyurethane as gate dielectric layer has mobility of 1.9×10^-2 cm^2/Vs. The electrical characteristics and Raman spectrum were measured at different banding curves. P3HT-based OTFTs have good stability even if they were bended at different bending curves. The stability of electricity characteristics OTFTs is prerequisite for a flexible display to keep the characteristics of OTFs under bending condition High quality of OTFTs on flexible substrate will give rise to high performance quality.

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