Abstract
We report the fabrication and characteristics of a novel graphene-Ag0 hybrid plasmonic nanostructure-based photodetector exhibiting moderately high responsivity (∼28 mA/W) and spectral selectivity (∼510 nm) in the visible wavelength. The formation of highly stable Ag0 nanoparticles with an average size of 40 nm is observed within the graphene layers, resulting in n-type doping of hybrid material. The absorption peak of graphene-Ag0 hybrid is redshifted to the visible wavelength (∼510 nm) from the plasmonic Ag peak (∼380 nm) in agreement with the optical simulation results for embedded metal nanoparticles. The study demonstrates the synergistic effect of the graphene-metal nanocomposite, which appears attractive for applications in graphene-based photonic devices.
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