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Maskless digital manufacturing of organic thin film transistor by femtosecond laser direct patterning

机译：飞秒激光直接构图技术无掩模数字化制造有机薄膜晶体管

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The small volume, large variety item manufacturing has been recognized as a next generation manufacturing scheme to satisfy the various demands from the customers. As a promising manufacturing technique, laser based maskless digital patterning emerged recently. Especially, the fabrication of metal nanopatterns on various substrates, such as glass and flexible polymers, has become important for various electronic device applications. In this study, we used the direct femtosecond laser sintering of metal nanocrystals to fabricate organic thin-film transistors. This process is an ultra-high-resolution direct metal patterning method in which the metal nanocrystals are sintered with a femtosecond laser beam to form high quality metal electrodes for the bottom gated organic thin film transistors with pentacene as an active layer. Organic thin-film transistors with PFBT treatments were demonstrated showing good performance with the mobility up to 0.0173 cm/Vs. These results indicate that the femtosecond laser sintering of metal nanocrystals can be applied to numerous applications in electronics.
机译：小批量，多品种的产品制造已被认为是满足客户各种需求的下一代制造方案。作为有前途的制造技术，近来出现了基于激光的无掩模数字图案化。特别地，在诸如玻璃和柔性聚合物的各种基板上的金属纳米图案的制造对于各种电子设备应用而言已经变得重要。在这项研究中，我们使用金属纳米晶体的直接飞秒激光烧结来制造有机薄膜晶体管。该方法是超高分辨率直接金属图案化方法，其中将金属纳米晶体与飞秒激光束烧结，以并五苯作为活性层形成用于底部栅控有机薄膜晶体管的高质量金属电极。已证明采用PFBT处理的有机薄膜晶体管表现出良好的性能，迁移率高达0.0173 cm / Vs。这些结果表明，飞秒激光烧结金属纳米晶体可以应用于电子领域的众多应用。

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