| 초록 |
During the past few years, the performance of organic or polymer thin film transistors (TFTs) on plastic substrates has continuously increased with the request of flexible displays and paper-like plastic electronic components. If the organic or polymer TFT device can yield similar or even better performance levels to a-Si:H TFTs, the production cost of large area electronics, like flat panel displays, will be significantly reduced using roll-to-roll(R2R) process. Additionally, in order to create a manufacturable process, well-defined polymer semiconductor is also necessary. Although the defining levels needed for commercial manufacturing have been demonstrated in thermally evaporated pentacene device using shadow mask, because of its relatively expensive facilities and high manufacturing cost, easily solution processable polymer semiconductor, such as poly-3-hexylthiophene (P3HT) and poly-3-alkyithiophene (P3AT), are emerging as the only option for low cost and easier process. Recently, printing technology has been focused on as the most accessible methods for the R2R process. However, the understanding of the printing technology of functional organic/inorganic materials on plastic substrate is an early stage and the performance is not satisfied in present. This paper will present investigations and technologies for achieving high performance comparable to evaporated organic transistors enabling P3HT TFTs to be constructed on a plastic substrate with easy printing process. |
