Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Meter-sized single-crystal graphene growth becomes possible

22.08.2017

"Preparation determines the future". Since the discovery of graphene, the synthesis of graphene has long been a hot spot in graphene community. Using transition metals such as Cu or Ni as substrate, scientists have realized the preparation of large-area graphene films.

Especially, high-quality large-scale continuous monolayer graphene has been successfully grown on Cu foils. This simple and low-cost method has been widely accepted as the most promising way for industrial-level graphene production.


These are schematic diagrams for epitaxial growth of single-crystal graphene on industrial Cu foil.

Credit: ©Science China Press

However, graphene films obtained by this method are usually polycrystalline with domain boundaries, which would greatly degrade the electrical, mechanical, thermal and optical properties. Therefore, to find a method to synthesize large-size single-crystal graphene is a big scientific problem needed to be solved.

Prof. K. H. Liu, Prof. D. P. Yu and Prof. E. G. Wang from Peking University cooperating with Prof. F. Ding from Ulsan National Institute of Science and Technology and other collaborators found a new way to prepare 5×50 cm2 single-crystal graphene on industrial Cu foils (Science Bulletin 2017, 62, 1074).

They first transformed industrial polycrystalline Cu foils into single-crystal Cu(111) by thermal annealing using a temperature-gradient-driving technique. Graphene domains were epitaxially grown on the Cu(111) substrate and then seamlessly merged together to form a large single-crystal graphene films.

Combined with their ultrafast graphene growth technique (Nature Nanotechnology 2016, 11, 930), the graphene growth rate and each individual graphene domain size were improved obviously. Also, oxygen released from oxide at high temperature was proved to further improve the domain alignment, which would greatly improve the quality of graphene films.

This reported technique allows the synthesis of large-size single-crystal graphene films, which possess superior properties for various high-end applications, especially in electronics, such as large-scale fabrication of THz devices and the transparent film replacing ITO. It will also enable the epitaxial growth of various other 2D single-crystal materials on graphene with meter-sized dimension.

###

This research was supported by National Key R&D Program of China (2016YFA0300903, 2016YFA0300802, 2014CB932500 and 2016YFA0200101), National Natural Science Foundation of China (51522201, 11474006, 11327902, 11234001, 21525310, 91433102 and 21573186), Postdoctoral Innovative Personnel Support Program (BX201700014) and National Program for Thousand Young Talents of China and the Institute for Basic Science (IBS-R019-D1) of Korea.

See the articles:

Xiaozhi Xu, Zhihong Zhang, Jichen Dong, Ding Yi, Jingjing Niu, Muhong Wu, Li Lin, Rongkang Yin, Mingqiang Li, Jingyuan Zhou, Shaoxin Wang, Junliang Sun, Xiaojie Duan, Peng Gao, Ying Jiang, Xiaosong Wu, Hailin Peng, Rodney S. Ruoff, Zhongfan Liu, Dapeng Yu, Enge Wang, Feng Ding, Kaihui Liu, Ultrafast Epitaxial Growth of Metre-Sized Single-Crystal Graphene on Industrial Cu Foil, Science Bulletin, 2017, 62(15):1074-1080

http://www.sciencedirect.com/science/article/pii/S209592731730350X

Xiaozhi Xu, Zhihong Zhang, Lu Qiu, Jianing Zhuang, Liang Zhang, Huan Wang, Chongnan Liao, Huading Song, Ruixi Qiao, Peng Gao, Zonghai Hu, Lei Liao, Zhimin Liao, Dapeng Yu, Enge Wang, Feng Ding, Hailin Peng, Kaihui Liu. Ultrafast growth of single-crystal graphene assisted by a continuous oxygen supply. Nature Nanotechnology 2016, 11, 930-935

http://www.nature.com/nnano/journal/v11/n11/full/nnano.2016.132.html

K. H. Liu | EurekAlert!

More articles from Materials Sciences:

nachricht Brilliant glow of paint-on semiconductors comes from ornate quantum physics
17.01.2019 | Georgia Institute of Technology

nachricht Viennese scientists develop promising new type of polymers
15.01.2019 | Vienna University of Technology

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Ultra ultrasound to transform new tech

World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles

The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.

Im Focus: Flying Optical Cats for Quantum Communication

Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.

In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...

Im Focus: Nanocellulose for novel implants: Ears from the 3D-printer

Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.

It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:

Im Focus: Elucidating the Atomic Mechanism of Superlubricity

The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.

One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...

Im Focus: Mission completed – EU partners successfully test new technologies for space robots in Morocco

Just in time for Christmas, a Mars-analogue mission in Morocco, coordinated by the Robotics Innovation Center of the German Research Center for Artificial Intelligence (DFKI) as part of the SRC project FACILITATORS, has been successfully completed. SRC, the Strategic Research Cluster on Space Robotics Technologies, is a program of the European Union to support research and development in space technologies. From mid-November to mid-December 2018, a team of more than 30 scientists from 11 countries tested technologies for future exploration of Mars and Moon in the desert of the Maghreb state.

Close to the border with Algeria, the Erfoud region in Morocco – known to tourists for its impressive sand dunes – offered ideal conditions for the four-week...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Our digital society in 2040

16.01.2019 | Event News

11th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Aachen, 3-4 April 2019

14.01.2019 | Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

 
Latest News

A new twist on a mesmerizing story

17.01.2019 | Physics and Astronomy

Brilliant glow of paint-on semiconductors comes from ornate quantum physics

17.01.2019 | Materials Sciences

Drones shown to make traffic crash site assessments safer, faster and more accurate

17.01.2019 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>