Morphology Control of Conductive Organic Film using Excimer Laser

有机膜的激光烧蚀是一种众所周知的现象，其中膜的表面在用高强度紫外脉冲激光束照射时被蚀刻掉。大量的研究结果表明，光热和光化学机制可能参与激光烧蚀有机薄膜。利用紫外可见光谱仪和X射线衍射仪对激光改性后的有机薄膜进行了取向和形貌的观察和分析。该工艺为制备性能可控的有机场效应晶体管提供了一种新的方法，并在信息处理器件和其他柔性器件中具有潜在的应用前景。

Laser ablation of organic films is a well known phenomenon in which surface of the film etched off upon irradiation with a high intensity ultraviolet pulsed laser beam. Numerous results have indicated that both photo thermal and photochemical mechanisms may be involved in laser ablation of organic films. The change in orientation and morphology of the organic thin film has been observed after laser modification process and analyzed by UV-visible spectrometer and XRD system. This process provides a new approach to make organic field effect transistors with controllable performances and with potential applications for information processing devices and other flexible devices.