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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Self-Organization Characteristics of Soluble Pentacene on Wettability-Controlled Patterned Substrate for Organic Field-Effect Transistors
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Self-Organization Characteristics of Soluble Pentacene on Wettability-Controlled Patterned Substrate for Organic Field-Effect Transistors

机译：可湿性并五苯在可湿性控制的有机基场效应晶体管衬底上的自组织特性

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摘要

Solution-processed self-patterning of 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS_PEN) has been achieved by wettability control on a dielectric surface. This is useful for the fabrication of arrayed patterns due to the exactness and simplicity of the patterns. Especially, we systematically studied the dependence of the self-organization behavior of soluble TIPS_PEN on pattern size and solvent evaporation rate using a circular geometry. With fast evaporation rates during solution-casting, the patterned deposits developed a low degree of crystalline microstructure and ringlike morphological (coffee-staining) structures, which were induced when evaporation-driven flow in a solution droplet was dominant. In contrast, long evaporation times produced TIPS_PEN deposits with well-ordered crystalline and dotlike morphological structures resulting from dominant diffusion-driven flow. Solvents with moderate evaporation rates allowed control over the conditions in which the morphological and crystalline structures of the semiconductor deposit formed, producing enhanced control over the electrical performance of organic field-effect transistors.
机译：通过在介电表面上的润湿性控制，已完成了6,13-​​双（三异丙基甲硅烷基乙炔基）并五苯（TIPS_PEN）的固溶自构图。由于图案的精确性和简单性，这对于阵列图案的制造是有用的。特别是，我们使用圆形几何系统研究了可溶性TIPS_PEN的自组织行为对图案尺寸和溶剂蒸发速率的依赖性。在溶液浇铸过程中，由于蒸发速度较快，图案化沉积物形成的晶体微结构和环状形态（咖啡染色）结构的程度较低，这是由溶液液滴中的蒸发驱动流占主导地位时引起的。相反，较长的蒸发时间产生了TIPS_PEN沉积物，该沉积物具有良好的晶体结构和点状形态结构，这是由主要的扩散驱动流导致的。具有适度蒸发速率的溶剂可以控制形成半导体沉积物的形态和晶体结构的条件，从而可以更好地控制有机场效应晶体管的电性能。

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