Journal
CHEMICAL PHYSICS LETTERS
Volume 595, Issue -, Pages 203-208Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2014.02.012
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Funding
- CSIR for a fellowship
- Ramanujan fellowship, DST, Govt. of India
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Substitution of heteroatoms in graphene is known to tailor its band gap. Another approach to alter the band gap of graphene is to create zero-dimensional graphene quantum dots (GQDs). Here we present the synthesis and photoluminescence properties of B-doped graphene quantum dots (B-GQDs) for the first time, having prepared the B-GQDs by chemical scissoring of B-doped graphene generated by arcdischarge in gas phase. We compare the photoluminescence properties of B-GQDs with nitrogen-doped GQDs and pristine GQDs. Besides, excitation wavelength independent PL emission, excellent upconversion of PL emission is observed in GQDs as well as B-and N-doped GQDs. (C) 2014 Elsevier B.V. All rights reserved.
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