Here comes Phosphorene as amazing material and will give a good fight to graphene! Being a natural semi conductor like Silicon is its main stay, while Graphene is not!
Graphene rival 'phosphorene' is born to be a transistor - tech - 24 January 2014 - New Scientist
Graphene rival 'phosphorene' is born to be a transistor - tech - 24 January 2014 - New Scientist