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Organically interconnected graphene flakes: A flexible 3-D material with tunable electronic bandgap
E Klontzas1,2, E Tylianakis3, V Varshney4,5
1Department of Chemistry, University of Crete, Voutes Campus, GR-71003, Heraklion, Crete, Greece.
Scientific Reports
|September 25, 2019
Summary
Molecularly pillared graphene offers tunable electronic properties. Researchers modified pillar density and distribution to control the band gap, enabling metallic or semiconducting graphene for flexible electronics.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Computational Chemistry
Background:
- Graphene exhibits unique electronic properties but requires modification for specific applications.
- Controlling graphene's band gap is crucial for electronic device development.
Purpose of the Study:
- To investigate the structural and electronic properties of molecularly pillared graphene.
- To explore how pillar density, chemical composition, and distribution influence graphene's band gap.
Main Methods:
- Density Functional based Tight Binding (DFTB) calculations were employed.
- Various molecular architectures were simulated by altering pillar parameters.
Main Results:
- Pillar density and distribution significantly tune the band gap, enabling a transition from metallic to semiconducting behavior.
- Pillar chemical composition offers fine-tuning of the band gap by introducing additional electronic states.
Conclusions:
- Molecularly pillared graphene's electronic properties are controllable through structural design.
- This material shows promise for applications in flexible electronics due to its tunable band gap.
