상세정보
학술지
Facile Fabrication of Properties-controllable Graphene Sheet
- 발행일
- 201604
- 출처
- Scientific Reports, v.6, pp.1-7
- ISSN
- 2045-2322
- 출판사
- Nature Publishing Group
- 협약과제
- 16ZE1100, ETRI 창의연구실 사업, 손승주
- 초록
- Graphene has been received a considerable amount of attention as a transparent conducting electrode (TCE) which may be able to replace indium tin oxide (ITO) to overcome the significant weakness of the poor flexibility of ITO. Given that graphene is the thinnest 2-dimensional (2D) material known, it shows extremely high flexibility, and its lateral periodic honeycomb structure of sp2 -bonded carbon atoms enables ~2.3% of incident light absorption per layer. However, there is a trade-off between the electrical resistance and the optical transmittance, and the fixed absorption rate in graphene limits is use when fabricating devices. Therefore, a more efficient method which continuously controls the optical and electrical properties of graphene is needed. Here, we introduce a method which controls the optical transmittance and the electrical resistance of graphene through various thicknesses of the top Cu layers with a Cu/Ni metal catalyst structure used to fabricate a planar mesh pattern of single and multi-layer graphene. We exhibit a continuous transmittance change from 85% (MLG) to 97.6% (SLG) at an incident light wavelength of 550 nm on graphene samples simultaneously grown in a CVD quartz tube. We also investigate the relationships between the sheet resistances.
- KSP 제안 키워드
- Carbon atoms, Catalyst structure, Electrical Resistance, Facile fabrication, Honeycomb structure, Light absorption, Light wavelength, Mesh pattern, Metal catalyst, Ni metal, Optical and electrical properties