Polymeric Ionic Liquid: Micro-segregated Polymers as Gating Materials

一个新兴的应用领域描述了使用低分子量离子液体作为功能性场效应晶体管器件中的介电门控接口。在这种器件中，离子液体的薄层被放置在栅极的顶部：这种通常非常薄的离子液体层（通常在~几十纳米（nm）的范围内）显著地改变了场效应管的门控特性，导致栅极的开关大大改善，从而大大加速了场效应管内的电荷输运特性（由于电双层（ELD）的形成）。该项目的总体目标是产生具有嵌入纳米结构域的聚合物离子液体（POILs）和离子凝胶，以解决用于fet中门控介电体的导电纳米限制“il液滴”的设计问题。了解结构和性质（如总电导率）与离子液体基材料的形态之间的复杂相互作用。此外，对无机基板上离子液体门控过程的相互作用机制、稳定性和可逆性的深入研究，将有助于深入评估这些聚合物材料在场效应管中门控的适用性。目的是选择一种合适的离子液体聚合物材料，能够在金属氧化物中产生纳米级的图案。

A newly emerging field of application has described the use of low molecular weight ionic liquids as a dielectric gating interface within functional FET devices. In such devices, a thin layer of an ionic liquid is placed on top of the gate: this often very thin layer (usually in the range of ~ tens of nanometers (nm)) of an ionic liquid significantly alters the gating properties of an FET, leading to substantially improved switching of the gate, thus considerably accelerating the charge transport properties within the FET (due to the formation of an electric double layer (ELD)). The overall goal of this project is the generation of polymeric ionic liquids (POILs) and ion gels with embedded nanoscopic domains to address the design of conductive nanoconfined "IL-droplets" for use as gated dielectrics in FETs. Understanding of the complex interplay between the structure and properties (e.g. overall conductivity) and the morphology of ionic liquid- based materials will be obtained. Further, an intensive study of the interaction mechanism stability and reversibility of the processes involved in ionic liquid- gating processes on inorganic substrates should enable the profound evaluation on applicability of these polymeric materials for gating in FETs. The aim is to select an appropriate ionic liquid- based polymeric material capable to generate a nanoscopic pattern in the underlying metal-oxide.