Simulating a Graphene Based Transistor

[Salman]

I want to simulate a Graphene Based Transistor. Which is in fact a BJT. I have problem making the structure of that. Because it has 4 layers but I can just put the different parts next to each other and not above each other. Can you explain how should I put the different parts above each other? 

[Petr Khomyakov]

You may read the section 'Building a bilayer graphene structure' in the following tutorial, http://docs.quantumwise.com/tutorials/opening_a_band_gap.html?highlight=graphene, to build a multilayered graphene structure, i.e., with 4 monolayers.

For learning how to build a graphene  transistor, you may then take a look at this tutorial http://docs.quantumwise.com/tutorials/vnl_graphene_transistor.html?highlight=graphene.