Characteristics of wafer scale epitaxial graphene for industrial sensening applications

Project summary

Project Funding: Vinnova

Project Call: Vinnova Graphene SIP (Strategiska Innovationsprogrammet för Grafen)

Grant Agreement:  2014-05186

Project Duration: 1 year starting Dec. 2014

Project Partners:  Acreo Swedish ICT AB, Lindmark Innovation AB and Linkoping University.

Project Coordinator: Graphensic AB

Project description

There are different ways to produce graphene, one of them is using epitaxial technique to form graphene-on-SiC, which enables to grow graphene on flat, large-area substrates (up to 100mm in diameter). Such type graphene provide advantages to fabricate sensor/devices using standard semiconductor processing techniques without the need for any layer transfer like in CVD growth. In particular, both SiC and graphene have demonstrated excellent biocompatibility in in-vivo and in-vitro studies with no cytotoxic responses. Combination of their biocompatibility and substrate-inferred processability makes graphene/SiC a highly attractive material for bio sensing applications.

Acreo is involved in the project to scan and compare various sensors based on the graphene grown on 2’’ 4H SI-SiC, for example glucose sensor for early diagnosis and monitoring of diseases. The graphene’s structural, optical and electrical properties are verified by AFM, SEM, TEM, FTIR and current-voltage (I-V) characteristics utilizing transmission-line method (TLM) structures. In addition, integration of the graphene with ZnO tetrapods and Au nanostructures is also explored in order to pave the way for possibilities to enhance the sensitivity of the biosensors


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