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Hindi Journal of Nanomaterials & Molecular NanotechnologyISSN: 2324-8777
Ruchira Dharmasena Author
Subjects of specialization
Affiliation
Thin Film Deposition ,XRD Analysis, SEM Analysis ,Material Characteristics, Materials Processing ,Advanced Materials
Department of Physics, Perm State University Perm, 614990, Russia
Biography
Ruchira R. Dharmasena currently works at the Department of Physics and Astronomy, University of Louisville. Ruchira does research in Condensed Matter Physics. His primary research field is Li battery including Li-S and Li-ion technology. Their most recent publication is 'Electrical transport properties of graphene nanowalls grown at low temperature using plasma enhanced chemical vapor deposition.'
Publications
Research Article Subscription
Photoluminescence in Functionalized/Doped Graphene Quantum Dots: Role of Surface States
Author(s): Uliana Salgaeva, Rong Zhao, Sergey Mushinsky, Jacek Jasinski, Xiao-An Fu, Victor Henner, Ruchira Dharmasena and Gamini Sumanasekera
Photoluminescence in Functionalized/Doped Graphene Quantum Dots: Role of Surface States
It has been shown that functionalization/doping of Graphene Quantum Dots (GQDs) can lead to further tuning of their already existing band gap. We have successfully functionalized GQDs (synthesized by hydrothermal process) with oxygen, hydrogen, fluorine, and doped with nitrogen using capacitively coupled plasma of respective gas as evidenced by Raman and X-ray photo emission spectroscopy (XPS). Room temperature photoluminescence (PL) of each functionalized GQD shows distinctive features and can be explained as due to charge transfers between the functional groups/d... view more»
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