Germanium-Assisted Direct Growth of Graphene on Arbitrary Dielectric Substrates for Heating Devices
- Chinese Academy of Sciences (CAS), Shanghai (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- City Univ. of Hong Kong (China)
- Fudan Univ., Shanghai (China)
Direct growth of graphene on dielectric substrates is a prerequsite for the development of graphene-based electronic and optoelectronic devices. However, the current graphene synthesis directly on dielectric substrates always involves metal contamination problem, and the direct production of graphene patterns still remains unattainable and challenging. We propose herein a semiconducting Ge-assisted chemical vapor deposition approach to directly grow monolayer graphene on arbitrary dielectric substrates. By pre-patterning of catalytic Ge layer, the graphene with desired pattern can be achieved with extreme ease. 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 the complete sublimation of catalytic Ge layer during or immediately after monolayer graphene formation, thus resulting in direct deposition of large-area continuous graphene on dielectric substrates. The large-area, highly conductive graphene synthesized on transparent dielectric substrate using the proposed approach has exhibited wide applications, e.g., in defogger and in thermochromic displays, with both devices possessing excellent performances.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1427391
- Report Number(s):
- LA-UR-18-21406
- Journal Information:
- Small, Vol. 13, Issue 28; ISSN 1613-6810
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
MoS2 –OH Bilayer-Mediated Growth of Inch-Sized Monolayer MoS2 on Arbitrary Substrates
Seed-Initiated Synthesis and Tunable Doping Graphene for High-Performance Photodetectors