| 摘要: | 本計畫為”垂直式有機發光電晶體與下世代顯示器之研究”，重點為建立垂直式有機電晶體之綜合性研究與應用，以克服目前傳統橫向有機電晶體應用於AMOLED顯示器驅動電路之結構限制和製程難度。垂直式電晶體相較於橫向電晶體具備幾項重要優點，包括：(1)通道長度藉由控制有機層厚度可縮短至次微米等級，搭配高電容介電層和源極設計，可在低驅動電壓下獲得高電流密度；(2)元件結構與OLED更相容，無需複雜的微影製程區隔電晶體電路與OLED，可直接整合為單一垂直式有機發光電晶體。因此，垂直式發光電晶體在製程上更加簡化，不但易於縮小元件面積和提升開口率，並且在元件設計和材料選擇上也具有相當大的彈性和變化性，可分別優化下部電晶體的電性，和上部OLED的發光強度、發光效率、和顏色。在未來顯示器應用上極具潛力。 建構在蕭特基垂直式有機電晶體的研究基礎上，本計畫將發展具有低驅動電壓、可視穿、可撓曲之垂直式有機發光電晶體和高解析度顯示器的應用，其中結合了原子層沉積(ALD)超薄介電層之備製、膠體微影技術於奈米開孔源極之運用、有機導電與發光半導體材料之開發、透明金屬電極之開發、元件設計與模擬、光電特性量測與分析、微型化元件之製程、和顯示器陣列之製作封裝測試等系統性的研究。從研究過程中建立相關理論基礎和實驗技術，對於開發新一代有機光電元件和軟性顯示器將有極大助益。 ;This project, Research on Vertical Organic Light-emitting Transistors and Next-generation Displays, is to develop a comprehensive study and application of vertical organic transistors, to overcome the structural restrictions and difficult processes as applying the conventional lateral organic transistors for AMOLED display driving circuits. Compared to lateral transistors, vertical transistors possess several important advantages, including: (1) Channel length controlled with the organic layer thickness can be reduced down to sub-microns, and with a high-capacitance dielectric layer and the designed source, high current densities can be achieved under a low driving voltage; (2) Device structure is more compatible with OLED, and can be directly integrated together into a single vertical organic light-emitting transistor (VOLET) without a need of complex lithography techniques. Thus, the fabrication of VOLETs is much more simplified, not only easy to scale down the device area and enhance the aperture ratio, but also flexible to design the different components and select materials. It is able to independently optimize the electrical properties of the lower transistor and the luminous intensity, efficiency, and color of the upper OLED. VOLET therefore offers great potential in the future display applications. Based on the research of Schottcky-based vertical organic transistors, this project will develop the low-driving-voltage, see-through, rollable VOLETs and high-resolution display applications, for which a systematic research of ultrathin dielectrics prepared by atomic layer deposition (ALD), nanopatterned source prepared by colloidal lithography, development of organic semiconductors and transparent metal electrodes, device design and simulation, optoelectronic characterization and analysis, device miniaturization, and the fabrication, packaging, and testing of display arrays, will be conducted. The relavant theories and experimental techniques established in the research will have significant benefits for the development of new-generation organic optoelectronic devices and flexible displays. |
