Polymeric Ionic Liquid: Micro-segregated Polymers as Gating Materials

一个新的应用领域描述了在功能性FET器件中使用低分子质量离子液体作为介电门控界面。在这种器件中，离子液体的薄层被放置在栅极的顶部：离子液体的这一非常薄的层(通常在几十纳米(Nm)的范围内)显著改变了FET的选通特性，导致极大地改善了栅极的开关，从而显著加速了FET内的电荷传输特性(由于形成了双电层(ELD))。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FET中用作栅极介质的导电纳米受限“IL-液滴”的设计。我们将了解离子液体材料的结构和性能(例如，总体导电性)和形态之间的复杂相互作用。此外，深入研究无机衬底上离子液体浇注过程中涉及的相互作用机理、稳定性和可逆性，将有助于对这些聚合物材料在场效应管中的适用性进行深入的评估。其目的是选择一种合适的基于离子液体的聚合物材料，能够在下面的金属氧化物中产生纳米图案。

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.