Morphology Control of Conductive Organic Film using Excimer Laser

有机薄膜的激光烧蚀是一种众所周知的现象，在高强度紫外脉冲激光束照射下，薄膜表面被腐蚀掉。大量研究结果表明，激光烧蚀有机薄膜可能涉及光热和光化学两种机制。观察了激光改性后有机薄膜的取向和形貌变化，并用紫外-可见光谱仪和XRD系统对其进行了分析。该工艺为制备性能可控的有机场效应晶体管提供了新的途径，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.