@misc{10481/83902,
year = {2023},
month = {5},
url = {https://hdl.handle.net/10481/83902},
abstract = {One of the key challenges in the field of flexible electronics relies on finding conductive materials that can
withstand bending and stretching stresses while maintaining their performance. In this context, this work presents
a comparative study of laser-induced conductive materials from the direct laser-scribing of two commercial
flexible films: the benchmark Kapton® HN polyimide (PI) precursor and the UltemTM 1000 polyetherimide (PEI)
alternative contender. The synthesis process on both materials is optimized in terms of electrical conductivity
using a high-performance galvanometric laser with a wavelength of 532 nm for the fabrication of multiple
samples at different laser powers and speeds. The samples are structurally characterized using Scanning Electron
Microscopy (SEM), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), and Fourier-Transform
Infrared Spectroscopy (FTIR) aiming at understanding the chemical and physical changes of the ablated material.
The results demonstrate that the proposed setup is feasible for the synthesis of uniform and reliable
conductive patterns on the surface of both substrates with high reproducibility. In particular, it is proved that PEI
is more suitable precursor for flexible electronics applications which demand high electrical conductivity,
leading to a sheet resistance of 3.62 ± 0.35 Ω/sq at 0.8 W and 5 mm/s once the laser-synthesis process is
optimized (against the 6.04 ± 0.63 Ω/sq at 0.6 W and 5 mm/s offered by the LIG on PI). The performance of both
laser-induced patterns as electrodes for the fabrication of electrochemical capacitors is also studied and
compared in terms of areal specific capacitance.},
organization = {FEDER/Junta de Andalucía-Consejería
de Transformaci´on Econ´omica, Industria},
organization = {Conocimiento y Universidades
Project P20_00265 and Project BRNM-680-UGR20; Project
TED2021-129949A-I00},
organization = {MCIN/AEI/10.13039/
501100011033},
organization = {European Union NextGenerationEU/PRTR},
organization = {Grant PID2020-117344RB-I00},
organization = {MCIN/AEI 10.13039/
501100011033},
organization = {Junta
de Andalucía – Consejería de Universidad, Investigaci´on e Innovaci´on
through the project ProyExcel_00268},
organization = {Spanish Ministry
of Sciences and Innovation through the Ram´on y Cajal fellow RYC2019-
027457-I,},
organization = {María Zambrano fellow C21.I4.P1},
organization = {grant PRE2021-096886.},
publisher = {Elsevier},
keywords = {Laser ablation},
keywords = {Polyetherimide},
keywords = {Flexible Electronics},
keywords = {Laser-induced grapheme},
keywords = {Graphene-based materials},
keywords = {Carbon Electrodes},
title = {Laser-synthesis of conductive carbon-based materials from two flexible commercial substrates: A comparison},
doi = {10.1016/j.apsusc.2023.157629},
author = {Houeix, Yann and Romero, Francisco J and Moraila-Martínez, Carmen Lucía and Rivadeneyra Torres, Almudena and Rodríguez Santiago, Noel and Morales Santos, Diego Pedro and Salinas Castillo, Alfonso},
}