期刊
CHEMICAL PHYSICS LETTERS
卷 595, 期 -, 页码 203-208出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2014.02.012
关键词
-
资金
- CSIR for a fellowship
- Ramanujan fellowship, DST, Govt. of India
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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