Thermal Properties of Laser-induced Graphene Films Photothermally Scribed on Bare Polyimide Substrates
Paper i proceeding, 2021

In this work, laser-induced graphene (LIG)/polyimide (PI) films with good thermal properties were prepared by directly inducing graphene on the bare PI substrates by a computer numerical control (CNC) laser engraving machine. The obtained samples were characterized by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The results showed that the laser energy density has a significant impact on the microstructures of the samples. Moreover, the thermal diffusivity of LIG/PI was increased from 0.5 mm2/s to 1.6 mm2/s, which is 3 times higher than bare PI. Finally, the electrothermal properties of the LIG films were investigated and the results showed that under a 12 V power supply, the equilibrium temperature of LIG films increases from 45℃ to 74℃ with the increase of laser energy density from 1.8 J/mm2 to 2.4 J/mm2. Our results indicate that this time-saving, low-cost, and environment-friendly method is promising for fabricating excellent graphene-based materials.

Thermal diffusivity

Thermal management




Fei Yang

Shanghai University

Chen Yu

Shanghai University

Johan Liu

Chalmers, Mikroteknologi och nanovetenskap, Elektronikmaterial

Shanghai University

Yong Zhang

Shanghai University

2021 23rd European Microelectronics and Packaging Conference and Exhibition, EMPC 2021

9780956808677 (ISBN)

23rd European Microelectronics and Packaging Conference and Exhibition, EMPC 2021
Virtual, Online, Sweden,


Atom- och molekylfysik och optik


Annan fysik

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