Fabrication and device propenles of high quality organic thin films by magmetic orientation

有机半导体作为一种用于光电子器件如发光二极管和场效应晶体管的有用材料，目前正吸引着极大的关注。为了优化这样的器件性能，在薄膜状态下的分子的取向控制是非常重要的，因为它们的光学和输运性质显示出显着的各向异性。为了控制分子取向，已经研究了在物理气相沉积中的衬底和生长条件的作用。然而，迄今尚未获得高度取向的有机半导体薄膜。众所周知，强磁场使有机单晶取向。本研究将磁场作为有机薄膜取向控制的一个新参数，研究了磁场对有机半导体和自组装膜取向的影响。

Organic semiconductors are currently attracting great attention as a useful material for opto-electronic devices such as light-emitting diodes and field effect transistors. To optimize such device performances, the orientation control of the molecules in the thin film state is very important, because their optical and transportation properties show significant anisotropies To control the molecular orientation, the roles of substrates and growth conditions in physical vapor deposition have been investigated. However, highly oriented thin films of organic semiconductors have not been obtained to date. It is well known that high magnetic field orients organic single crystals. In this study, we aimed at magnetic field as a new parameter of orientation control of organic thin films, and the effects on orientation of some organic semiconductors and self-assembled monolayers were investigated.