Germanium-Assisted Direct Growth of Graphene on Arbitrary Dielectric Substrates for Heating Devices

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

28 Scopus Citations
View graph of relations

Author(s)

  • Ziwen Wang
  • Zhongying Xue
  • Miao Zhang
  • Yongqiang Wang
  • Xiaoming Xie
  • Peng Zhou
  • Zengfeng Di
  • Xi Wang

Detail(s)

Original languageEnglish
Article number1700929
Journal / PublicationSmall
Volume13
Issue number28
Publication statusPublished - 26 Jul 2017

Abstract

Direct growth of graphene on dielectric substrates is a prerequisite to the development of graphene-based electronic and optoelectronic devices. However, the current graphene synthesis methods on dielectric substrates always involve a metal contamination problem, and the direct production of graphene patterns still remains unattainable and challenging. Herein, a semiconducting, germanium (Ge)-assisted, chemical vapor deposition approach is proposed to produce monolayer graphene directly on arbitrary dielectric substrates. By the prepatterning of a catalytic Ge layer, the graphene with desired pattern can be achieved conveniently and readily. Due to the catalysis of Ge, monolayer graphene is able to form on Ge-covered dielectric substrates including SiO2/Si, quartz glass, and sapphire substrates. Optimization of the process parameters leads to complete sublimation of the catalytic Ge layer during or immediately after formation of the monolayer graphene, enabling direct deposition of large-area and continuous graphene on dielectric substrates. The large-area, highly conductive graphene synthesized on a transparent dielectric substrate using the proposed approach has exhibited a wide range of applications, including in both defogger and thermochromic displays, as already successfully demonstrated here

Research Area(s)

  • chemical vapor deposition, dielectric substrates, Ge-assisted growth, graphene

Citation Format(s)

Germanium-Assisted Direct Growth of Graphene on Arbitrary Dielectric Substrates for Heating Devices. / Wang, Ziwen; Xue, Zhongying; Zhang, Miao; Wang, Yongqiang; Xie, Xiaoming; Chu, Paul K.; Zhou, Peng; Di, Zengfeng; Wang, Xi.

In: Small, Vol. 13, No. 28, 1700929, 26.07.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review