基于柔性纸张衬底的垂直结构有机双电层晶体管研究

项目名称： 基于柔性纸张衬底的垂直结构有机双电层晶体管研究

项目编号： No.61306085

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 孙佳

作者单位： 中南大学

项目金额： 24万元

中文摘要： 最近，垂直结构有机晶体管具有成本低、柔韧性、重量轻等诸多优点，在有机光电子器件应用领域表现出巨大的应用前景。本申请项目拟在纸张衬底上制备垂直结构有机晶体管、通过使用导电纳米材料源电极改善器件性能、并对垂直结构器件的工作机理给出详细解释。采用微电子工艺传统的PECVD、旋涂技术等在纸张衬底上制备多孔SiO2、壳聚糖等固态电解质作为垂直结构有机晶体管的绝缘层。由于双电层效应，这些固态电解质具有巨大单位电容，使得器件工作电压低于2V。利用真空镀膜技术和旋涂技术制备CuPc，C60以及P3HT等有机半导体薄膜，结合金属掩模技术，利用热蒸发设备沉积源漏电极，研制垂直结构低电压有机纸张晶体管。利用SEM，TEM，AFM等对垂直器件微结构、形貌进行表征，利用先进的器件测试手段分析该类器件的电学特性以及固态电解质双电层特性，优化器件的载流子迁移率、电流开关比、亚阈值斜率、开关速度、表面界面特性关键参数。

中文关键词： 有机半导体；柔性电子；双电层晶体管；光电探测器；电荷输运

英文摘要： Recently, vertical organic field-effect transistors have attracted extensive interest for organic optoelectronic applications because of low cost, flexibility and light weight. Here we aim at developing vertical organic electric-double-layer（EDL）transistors on flexible paper substrate, improving the device performances by using conducting nanorods or nanotubes as the source electrodes and elucidating the operating mechanism. The solid-electrolyte gate dielectrics (nanoporous SiO2, chitosan, and so on) can be fabricated on low-cost paper substrate by traditional PECVD or spin-coating technology. The prepared solid electrolyte gate dielectric, which forms the so-called electric-double-layer (EDL) associated with a high specific capacitance, can be used to achieve low operational voltages (<2V) of transistors. The vacuum deposition and spin-coating technoloy can be used for the preparation of organic semiconductor channel layer (CuPc, C60, P3HT) . The fabrication of the vertical organic EDL transistor arrays on paper can be completed by deposition of the electrodes through the metal shadow mask. The surface characterization of the paper and the cross-sectional image of the completed vertical organic transistor devices will be characterized using field emission scanning electron microscopy (SEM),transmission electr

英文关键词： organic semiconductors；flexible electronics；electric-double-layer transistors；photodetectors；charge transport