Realization of lasing emission from graphene quantum dots using titanium dioxide nanoparticles as light scatterers

Hai Zhu, Wenfei Zhang, Siu Fung Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

39 Citations (Scopus)


The luminescent capability of graphene quantum dots (GQDs) was investigated and compared with that of carbon nanodots (C-dots) obtained from the same functionalization process. It was found that the optical gain of GQDs is higher than that of C-dots due to their geometrical advantages such as larger surface area to volume ratio and smaller volume. Under optical excitation at 266 nm, lasing emission was observed from a Fabry-Perot cavity containing a mixture of GQDs and TiO2 nanoparticles dispersed inside ethanol.
Original languageEnglish
Pages (from-to)1797-1802
Number of pages6
Issue number5
Publication statusPublished - 7 Mar 2013

ASJC Scopus subject areas

  • Materials Science(all)

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