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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.
  • The formation mechanism of various carbon materials, from fullerene to carbon nanotube and graphene.
  • Kinetics and thermodynamics of materials growth and etching.
  • The structure, properties and fundamentals of nanomaterials.
  • The experimental synthesis of carbon nanotubes.

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Chloroform-Assisted Rapid Growth of Vertical Graphene Array and Its Application in Thermal Interface Materials

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Title
Chloroform-Assisted Rapid Growth of Vertical Graphene Array and Its Application in Thermal Interface Materials
Author
Xu, ShichenCheng, TingYan, QingweiShen, ChaoYu, YueLin, Cheng-TeDing, FengZhang, Jin
Issue Date
2022-03
Publisher
WILEY
Citation
ADVANCED SCIENCE, pp.2200737
Abstract
With the continuous progress in electronic devices, thermal interface materials (TIMs) are urgently needed for the fabrication of integrated circuits with high reliability and performance. Graphene as a wonderful additive is often added into polymer to build composite TIMs. However, owing to the lack of a specific design of the graphene skeleton, thermal conductivity of graphene-based composite TIMs is not significantly improved. Here a chloroform-assisted method for rapid growth of vertical graphene (VG) arrays in electric field-assisted plasma enhanced chemical vapor deposition (PECVD) system is reported. Under the optimum intensity and direction of electric field and by introducing the highly electronegative chlorine into the reactor, the record growth rate of 11.5 mu m h(-1) is achieved and VG with a height of 100 mu m is successfully synthesized. The theoretical study for the first time reveals that the introduction of chlorine accelerates the decomposition of methanol and thus promotes the VG growth in PECVD. Finally, as an excellent filler framework in polymer matrix, VG arrays are used to construct a free-standing composite TIM, which yields a high vertical thermal conductivity of 34.2 W m(-1) K-1 at the graphene loading of 8.6 wt% and shows excellent cooling effect in interfacial thermal dissipation of light emitting diode.
URI
https://scholarworks.unist.ac.kr/handle/201301/58306
URL
https://onlinelibrary.wiley.com/doi/10.1002/advs.202200737
DOI
10.1002/advs.202200737
ISSN
2198-3844
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MSE_Journal Papers
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