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    题名: 可溶性有機薄膜電晶體噻吩蒽材料的製備及其元件開發
    作者: 胡堂祥;Hu,Tarng-Shiang
    贡献者: 化學學系
    关键词: 有機薄膜電晶體;有機場效電晶體;軟性電子紙;軟性顯示器;Organic thin film transistor;OTFT;flexible e-paper;flexible display
    日期: 2015-07-16
    上传时间: 2015-09-23 10:44:25 (UTC+8)
    出版者: 國立中央大學
    摘要: 有機薄膜電晶體(OTFT)製作過程中,決定分子排列性質與形貌的好壞,除了取決於分子本身的性質外,更大的原因是分子由溶液中析出堆疊沉積於基材的過程,此過程牽涉溶劑的選擇與塗佈條件控制。除了可以利用調控介面性質而改善有機薄膜的成長,也可利用退火的後處理方式促使有機分子再結晶,提高有機薄膜的結晶性或擴大薄膜的連續面積,而提升有機薄膜電晶體的電性表現。
    本篇論文主要的研究重點在於以噻吩蒽(Anthradithiophene, ADT) 為架構,合成可溶性TESADT有機半導體衍生物材料,將其製作成有機薄膜電晶體元件,分析並最佳化所開發材料的特性。
    所有元件皆使用溶液製程的方法來製作,可藉由Solution Shearing (SS)、Droplet Pinned Crystallization (DPC)及Drop Casting (DC)等溶液製程方式改善載子遷移率(Mobility),輔以XRD及AFM分析,因此,我們可以找出製作有機薄膜電晶體元件效能更佳的方法。
    ;In organic thin film transistor (OTFT) manufacturing process, the topography of organic semiconductor is determined by the molecular arrangement. In addition to molecule itself, molecular stacking on a substrate is an important issue. This process involves solvent choice and coating conditions. In improving molecular ordering, post solvent annealing process is used to improve crystallinity of organic molecules. Therefore, highly crystallized organic molecules enhance the electrical performance of the organic thin film transistor.
    The material system is based on ADT (Anthradithiophene) in this thesis. The organic semiconductor materials TESADT and its derivatives were synthesized. All of them were demonstrated by making OTFT device and analyzed to optimize their properties.
    The device fabrication of all the materials was done by solution process. We tried to improve device mobility by solution shearing 、droplet-pinned crystallization and Drop casting. We also analyzed surface profiles of the organic semiconductors using XRD and AFM. Therefore, we can develop the best method to fabricate OTFT devices with better mobility and performance.
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