Photonic Crystal Enhanced Absorbance of CVD Graphene
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In the first part of this work we describe a chemical vapour deposition (CVD) method developed for graphene synthesis. Graphene samples with a controlled amount of layers have been prepared and transferred onto different substrates. The samples obtained have been characterized by several optical techniques. Optical absorption spectroscopy was used for estimation of the number of deposited graphene layers and the Raman spectra confirmed the presence of a high quality graphene monolayer. In the second part of the work we present a general concept of graphene integration with photonic crystals (PC) for enhancement of the optical absorbance of graphene. We describe a design approach, computer simulations of optical properties and a fabrication process of PC slabs. The experimental details of graphene combination with PC structures and the optical characterization of devices are described.
KeywordsPhotonic Crystal Graphene Layer Resonance Wavelength Graphene Film Graphene Monolayer
The work was partially supported by RFBR grant 10-02-00792, MK-2921.2010.2 project and FP7 project-IRSES No-247007. The support of Ambassade de France en Russie is also aknowledged.
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