Abstract
Reduced graphene oxide quantum dots (rGOQDs) were synthesized by annealing GOQDs in H2 atmosphere. The photoluminescence (PL) properties of GOQDs and the rGOQDs samples were investigated. The results showed that compared to GOQDs, a blue to purple tunable PL of rGOQDs can be obtained by regulating the annealing temperature. The increase fraction of the newly formed isolated sp2 clusters may be responsible for the observed tunable PL.
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