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    题名: 可溶性 N 型醌型三併環噻吩與 P 型多併環噻吩有機薄膜電晶體材料之開發
    作者: 黃楚芸;Huang,Chu-yun
    贡献者: 化學學系
    关键词: 有機薄膜電晶體;organic thin film transistors
    日期: 2015-07-28
    上传时间: 2015-09-23 10:47:47 (UTC+8)
    出版者: 國立中央大學
    摘要: 本研究主要開發可溶性多併環噻吩有機薄膜電晶體材料,以具長碳鏈之三倂環噻吩與具硫醚碳鏈之聯噻吩為末端基團,分別與多倂環噻吩TTA、DTT與TT之中心共軛單元耦合,開發出六個新的可溶性P-type有機化合物 DDTTR-T (1)、DDTTR-TT (2)、DDTTR-DTT (3)、DDTTR-TTA (4)、DBST-DTT (5)、DBST-TTA (6)。
    同時也進行可溶性 N-type醌型多併環噻吩有機材料之開發,以三併環噻吩為核心,於其兩端引入dicyanomethylene 基團,改變併環噻吩整體之共振,以不同烷鏈或烯類碳鏈調控此醌型材料於有機溶劑之溶解度,開發出三個具有溶解度的N-type醌型材料 DTTRQ (7)、DTTR’Q (8)、DTTR’Q (9)。
    利用 UV-vis 與 DPV 探討所開發分子的 HOMO 與 LUMO 能階,藉由 TGA 和 DSC 探討這些新開發材料之熱穩定性。目前,化合物 DTTRQ (7) 由溶液製程製成元件初步測試,具有N-type場效性質,載子移動率可達 0.25 cm2/Vs,其餘半導體材料之元件仍在待測中。
    ;A series of new organic semiconductor were synthesized and characterized for p-type organic thin film transistors (OTFT). TTA, DTT, and TT units were used as the central cores, which were coupled with soluble end-capped thiophenyl groups such as DTT with β- substituted alkyl side chains or BST with thioalkyl chains. Six new developed OTFTs, DDTTR-T (1), DDTTR-TT (2), DDTTR-DTT (3), DDTTR-TTA (4), DBST-DTT (5), and DBST-TTA (6) were prepared.
    For n-type OTFTs, three soluble and highly stable fuse thiophene based quinoidal semiconductors with alkyl and alkenyl long chains, DTTRQ (7), DTTR’Q (8), and DTTR’Q (9) were synthesized and characterized. The LUMO of these three compounds show < -4.1 eV and thus are potential air stable n-type materials.
    The optical and electrochemical (HOMO and LUMO) properties of these materials were characterized by UV-vis and DPV. Thermal properties were investigated by TGA. Currently, DTTRQ (7) exhibits good n-channel mobility of 0.25 cm2V-1s-1 via solution shearing. Meanwhile, the rest of new developed semiconductors OTFT device studies are in progress.
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