Conductive Writing with High Precision by Laser-Induced Point-to-Line Carbonization Strategy for Flexible Supercapacitors,Advanced Optical Materials

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Conductive Writing with High Precision by Laser-Induced Point-to-Line Carbonization Strategy for Flexible Supercapacitors
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2021-09-23 , DOI: 10.1002/adom.202100793
Heng Guo ₁ , Jianfeng Yan ₁ , Lan Jiang ₂ , Liangti Qu ₃ , Jiangang Yin ₄ , Jiangang Lu ₄

Affiliation

Flexible electronic technologies have broad development prospects. Fabrication of micro devices on flexible carbon precursors via laser carbonizing has the advantages of involving only one step, requiring no mask, and wide adaptability. It has attracted significant attention in recent years to fabricate micro devices on polyimide (PI) via laser carbonization. However, the precision of laser carbonization is low because large areas of the material are easily carbonized simultaneously. Thus, the fabrication of micro devices with high precision and narrow line widths via laser carbonization remains challenging. Herein, a laser-induced carbonization method with point-to-line carbonization strategy is proposed and used to fabricate supercapacitors on PI. The carbon line width decreases from over 150 to below 10 µm using this method. High-precision conductive writing is realized on PI. Carbon lines written by this method have low resistance and porous surface. Hence, these carbon structures are suitable as electrodes for supercapacitors. Supercapacitors with microscale electrode widths are fabricated using this method. This work demonstrates that the point-to-line strategy improves the precision of laser carbonization and provides an effective method for fabricating flexible electronics on polymers with high precision.

中文翻译：

通过激光诱导点对线碳化策略对柔性超级电容器进行高精度导电写入

柔性电子技术具有广阔的发展前景。激光碳化在柔性碳前驱体上制备微器件具有步骤简单、无需掩膜、适应性广等优点。近年来，通过激光碳化在聚酰亚胺 (PI) 上制造微器件引起了极大的关注。然而，激光碳化的精度较低，因为大面积的材料容易同时碳化。因此，通过激光碳化制造具有高精度和窄线宽的微型器件仍然具有挑战性。在此，提出了一种具有点对线碳化策略的激光诱导碳化方法，并用于在 PI 上制造超级电容器。使用这种方法，碳线宽度从 150 多微米减少到 10 微米以下。在PI上实现高精度导电书写。用这种方法书写的碳线电阻低，表面多孔。因此，这些碳结构适合作为超级电容器的电极。使用这种方法制造具有微型电极宽度的超级电容器。这项工作表明，点对线策略提高了激光碳化的精度，并为在聚合物上高精度制造柔性电子器件提供了一种有效的方法。

更新日期：2021-09-23

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