Graphene, a monolayer of sp²-bonded carbon atoms, is not only the basis for graphite but also a new material for various applications in the field of micro- and optoelectronics. Although graphene or single layers of graphite have been subject of research since the 1960s, the special and unique properties of this material have become more and more popular after 2004. This was mainly pushed forward by the pioneering work of Andre Geim and Konstantin Novoselov who received the Nobel Prize in Physics in 2010. Within the last years the excellent and unique electronic, optical and mechanical characteristics of graphene were systematically analyzed and explored, making this material ideally suiting for various applications.
A summary of details can be found in the corresponding FactSheet “Graphene” in the sidebar on the right-hand side.
Wide range of applications
Possible fields of applications for graphene range from components for microelectronics to functional coating and up to applications in medicine.
AMO GmbH has already been working in this relatively young field since 2005 and demonstrated its competency in several national and European research projects.
Below, in a short summary an overview of current research projects is given.
This EU-project is the largest research activity on graphene in the world, having the goal to bring graphene and related 2D materials from the lab to applications. The Flagship Graphene will run for 10 years with a total budget of 1 billion Euro and is currently involving 142 partners from 23 countries. In this highly visible flagship AMO has a central role in the development of the research program and is responsible for the workpackage on high-frequency electronics. The enabling of new functionalities in Si-CMOS technology using graphene based devices is one of the major near term goals.
The HEA2D project is a collaboration between University, research institutes and three industrial partners. Within the project a consistent processing chain existing out of different deposition processes for 2D materials, procedures in order to transfer on polymer films as well as integration into plastic components suitable for large-scale use are explored.
The focus of AMOs subproject is the exploration of CVD processes and systems engineering for deposition of Graphene and 2D materials in a material system (Mo,W) (Se,S) as well as the integration in electrical and optoelectronic components on flexible substrates.
In this EU-project a wafer scale CVD production platform for graphene will be developed for applications where the outstanding properties of Graphene allow a decisive advantage. The project covers the entire value chain including partners for material research, equipment manufacturers, graphene producers and end users. AMO pursues within this project active graphene based components integrated on a silicon photonic chip, including modulators and photodetectors for optical data communication.
AMOs specific role in this EU-project is the realization of graphene-based electrodes with high conductivity and transparency for organic solar cells. This will enable high efficiency device with mechanical flexibility, opening up applications beyond those covered by silicon based solar cells.
Spintronics in Graphene is investigated within this European Marie-Curie network focusing on spin transport in graphene. In this project AMO is responsible for the fabrication of spin-injection barriers and contacts, which are the decisive elements in spin-transistors.
This DFG-funded project is embedded in the priority program Graphene (SPP 1459), the largest Graphene-activity in Germany. AMO is developing new architectures for graphene based field effect transistors in order to push their maximum frequency of operation in the THz-range.