Liang Shuyu, Yang Ying, Lv Chao, Liu Yuefeng, Xia Hong
Opt Lett. 2022 Jun 1;47(11):2630-2633. doi: 10.1364/OL.461197.
Conductive polymers have attracted a great deal of attention due to their remarkable electrical conductivity. However, the low solubility and inability to meet the limit for the flexible patterning fabrication ability of conductive polymers hinders their applications in miniaturized and integrated electronic devices. Here, femtosecond laser direct writing (FsLDW) is employed to achieve the in situ fabrication of polypyrrole (PPy) with flexibility. Notably, high-precision flexible patterning with a minimum feature size of 5.2 µm and spatial control over the polymerization of PPy is achieved. Moreover, PPy microwires are constructed into a photodetector that exhibits a responsivity of 644 A/W at 0.1-V bias under ultraviolet (UV) irradiation. Ultimately, an image sensor is fabricated by integrating multiple photodetectors, demonstrating the application potential of FsLDW technology for developing miniaturized and integrated electronic devices based on conductive polymers.
导电聚合物因其卓越的导电性而备受关注。然而，导电聚合物的低溶解性以及无法满足柔性图案化制造能力的限制，阻碍了它们在小型化和集成电子器件中的应用。在此，采用飞秒激光直写（FsLDW）实现了具有柔韧性的聚吡咯（PPy）的原位制备。值得注意的是，实现了最小特征尺寸为5.2 µm的高精度柔性图案化以及对PPy聚合的空间控制。此外，将PPy微线构建成一个光电探测器，该探测器在紫外（UV）照射下，在0.1 V偏压下的响应度为644 A/W。最终，通过集成多个光电探测器制造出了一个图像传感器，证明了FsLDW技术在开发基于导电聚合物的小型化和集成电子器件方面的应用潜力。
