Fluorescence quenching metrology of graphene

Maziar Ghazinejad; Hamed Hosseini Bay; Jennifer Reiber Kyle; Mihrimah Ozkan; Cengiz S. Ozkan

doi:10.1117/12.2040801

19 February 2014 Fluorescence quenching metrology of graphene

Maziar Ghazinejad, Hamed Hosseini Bay, Jennifer Reiber Kyle, Mihrimah Ozkan, Cengiz S. Ozkan

Proceedings Volume 8994, Photonic and Phononic Properties of Engineered Nanostructures IV; 89941R (2014) https://doi.org/10.1117/12.2040801
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We investigate the application of fluorescence quenching microscopy (FQM) for visual characterization of graphene quality, number of layers and uniformity over its landscape. The method relies on the fact that pristine, modified and multi-layer graphene regions quench fluorescence with different rates. Steady-state and time-resolved emission spectroscopy are used to comparatively characterize the photophysical behavior of pristine graphene relative to unquenched dye on bare substrate. The results demonstrate that with premeditated choice of Fluorescence dye, the interaction between fluorophores and graphene provides valuable tools for identifying the chemical structure and thickness of graphene. Fluorescence quenching metrology can be implemented as the basis for a microscopy based metrology for 2D materials.

Citation Download Citation

Maziar Ghazinejad, Hamed Hosseini Bay, Jennifer Reiber Kyle, Mihrimah Ozkan, and Cengiz S. Ozkan "Fluorescence quenching metrology of graphene", Proc. SPIE 8994, Photonic and Phononic Properties of Engineered Nanostructures IV, 89941R (19 February 2014); https://doi.org/10.1117/12.2040801

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