In-Depth Study of Laser Diode Ablation of Kapton Polyimide for Flexible Conductive Substrates

Nanomaterials
Francisco J RomeroNoel Rodriguez

Abstract

This work presents a detailed study of the photothermal ablation of Kapton® polyimide by a laser diode targeting its electrical conductivity enhancement. Laser-treated samples were structurally characterized using Scanning Electron Microscopy (SEM), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), as well as Diffuse Reflectance Infrared Fourier Transform (DRIFT) spectroscopy. The results show that the laser-assisted ablation constitutes a simple one-step and environmental friendly method to induce graphene-derived structures on the surface of polyimide films. The laser-modified surface was also electrically characterized through the Transmission Line Method (TLM) aiming at the improvement of the conductivity of the samples by tuning the laser power and the extraction of the contact resistance of the electrodes. Once the laser-ablation process is optimized, the samples increase their conductivity up to six orders of magnitude, being comparable to that of graphene obtained by chemical vapor deposition or by the reduction of graphene-oxide. Additionally, we show that the contact resistance can be decreased down to promising values of ∼2 Ω when using silver-based electrodes.

References

Dec 2, 2000·Physical Review Letters·C Thomsen, S Reich
Feb 8, 2011·Nature Nanotechnology·Fengnian XiaPhaedon Avouris
Nov 20, 2012·Nanoscale·Rebecca S Edwards, Karl S Coleman
Oct 7, 2014·Nature Nanotechnology·Amaia Zurutuza, Claudio Marinelli
Dec 11, 2014·Nature Communications·Jian LinJames M Tour
Jan 26, 2018·Chemical Society Reviews·Jiang-Bin WuPing-Heng Tan

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Citations

Jun 30, 2019·Nanomaterials·Francisco J RomeroNoel Rodriguez
Jun 4, 2020·Micromachines·Francisco J RomeroDiego P Morales
Jan 16, 2019·Nanomaterials·Lishi JiaoJamyeong Koo
Aug 25, 2020·Nano-micro Letters·Libei HuangRuquan Ye
Aug 24, 2019·Nanomaterials·Francisco J RomeroNoel Rodriguez
Apr 5, 2020·Micromachines·Almudena Rivadeneyra, Juan Antonio López-Villanueva
Dec 11, 2020·Nanomaterials·Almudena RivadeneyraAlfonso Salinas-Castillo
Jun 18, 2021·Nano-micro Letters·Libei HuangRuquan Ye
Aug 29, 2021·Polymers·Kalpana SettuYu-Ming Huang
Feb 11, 2020·ACS Applied Materials & Interfaces·Michael G StanfordJames M Tour

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Methods Mentioned

BETA
Scanning
X-ray

Software Mentioned

Casa
CasaXPS

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