Unexpectedly high thermal boundary resistance of Cr/graphene/SiO2 structure

Tianzhuo Zhan, Haidong Wang, Yibin Xu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We measured the thermal resistances of the Au/graphene/SiO2, Au/Ti/graphene/SiO2, and Au/Cr/graphene/SiO2 structures. The thermal resistances of the three structures were found to be significantly higher than those of the corresponding graphene-free structures, indicating that even monolayer graphene can greatly increase the thermal boundary resistance at metal/SiO2 interfaces. Furthermore, the thermal resistance of the Au/Cr/graphene/SiO2 structure is unexpectedly significantly higher than those of the other two structures, indicating that the diffusion mismatch model (DMM) fails to predict the thermal boundary resistance at metal/graphene interfaces. The poly(methyl methacrylate) (PMMA) residue contamination layer on the graphene surface may play an important role in increasing the thermal resistances of metal/graphene/SiO2 structures. Also, transition metal/graphene and transition metal/PMMA interactions may also affect the thermal boundary resistance.

Original languageEnglish
Article number055101
JournalJapanese Journal of Applied Physics
Volume56
Issue number5
DOIs
Publication statusPublished - 2017 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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