Nature Communications (Mar 2016)
Exciton–exciton annihilation and biexciton stimulated emission in graphene nanoribbons
Abstract
Graphene nanoribbons confine electrons to just one dimension and this gives rise to strong electron–hole interactions. Here, the authors investigate the creation and recombination of biexcitons in these structures by ultrafast optical pulses using femtosecond transient absorption spectroscopy.