在本論文中，我們將探討藉由溶液製程實現混合C60和P-BTDT:OP-BTDT的小分子雙極性有機薄膜電晶體。混合P型和N型小分子材料作為半導體層的電特性被關注，這些元件顯示具有雙極性電荷載子的傳輸行為。使用原子力顯微鏡(AFM)觀察，在最佳P型小分子材料(P-BTDT:OP-BTDT)與N型小分子材料(C60)的重量比條件下，主動層相位圖顯示存在良好的傳輸路徑，並測得電洞的場效移動率與電子的場效移動率分別為0.0297 cm2/Vs和0.0243 cm2/Vs。如此平衡的電洞與電子移動率，使得他們在有機互補式電路上極具發展潛力而且這些雙極性有機薄膜電晶體的反向電路也被展現。

In this thesis, we have investigated the realization of small molecule organic thin-film transistor based on blend of fullerene (C60) and P-BTDT:OP-BTDT via solution process. As far as the electrical characteristic of p- and n-type small molecular materials mixed as semiconductor layer is concerned, these devices show the ambipolar charge carrier transport. With optimized the weight ratio of (P-BTDT:OP-BTDT)/C60, the phase images of active layer employing atomic force microscopy show a fine network and filed-effect mobility for hole and electron are measured as 0.0297 and 0.0243 cm2/Vs, respectively. Such a balanced of hole and electron makes them potential candidates for the organic complementary circuits and inverter circuits of these ambipolar TFTs are also demonstrated.

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