Journal of Nanomaterials & Molecular NanotechnologyISSN: 2324-8777

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Gamini Sumanasekera Author

gusuma01@louisville.edu

Subjects of specialization
Nanomaterials, Materials, Nanoelectronics, Thin Films and Nanotechnology, Microelectronics, Thin Films

Affiliation
Department of Physics & Astronomy, University of Louisville, Louisville, KY 40292, USA

Biography

Gamini Sumanasekera working in the Department of Physics & Astronomy, University of Louisville, Louisville, KY 40292, USA.Gamini Sumanasekera has an area of research interest in the field of Nanomaterials, Materials, Nanoelectronics, Thin Films and Nanotechnology, Microelectronics, Thin Films.

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»

DOI: 10.4172/2324-8777.1000215

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