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US 8,802,481 B2Granted
Photodetector capable of detecting the visible light spectrum
AssigneeUniversity of Seoul Industry Cooperation Foundation
InventorDoyeol Ahn
Life of this patent
Estimating the term…
Abstract
Apparatuses capable of and techniques for detecting the visible light spectrum are provided.
Claims20
A method to assemble a photodetector capable to detect visible light spectrum, the method comprising:
- providing a source and a drain;
- coupling the source and the drain with at least one nano-assembly;
- positioning at least two surface plasmon waveguides between the source and the drain and juxtaposing to the at least one nano-assembly in a longitudinal direction of the at least one nano-assembly;
- positioning a transparent gate in proximity to the at least one nano-assembly and the at least two surface plasmon waveguides;
- and
- arranging the transparent gate so as to extend substantially parallel to at least one of the source and the drain,
- wherein one of the at least two surface plasmon waveguides is positioned along a first side of the at least one nano-assembly, and another of the at least two surface plasmon waveguides is positioned along a second side of the at least one nano-assembly that is opposite the first side.
4 more elements
A method to operate a photodetector capable to detect visible light spectrum, the method comprising:
- providing the photodetector including:
- a source and a drain;
- at least one nano-assembly coupled to the source and the drain;
- at least two surface plasmon waveguides between the source and the drain and juxtaposed to the at least one nano-assembly in a longitudinal direction of the at least one nano-assembly;
- and
- a transparent gate in proximity to the at least one nano-assembly and the at least two surface plasmon waveguides;
- irradiating the at least one nano-assembly with photons of light to cause an electric current to flow in the photodetector;
- and
- confining an electric field, created by the irradiated photons of the light, to the at least one nano-assembly by the at least two surface plasmon waves.
6 more elements
A method to assemble a photodetector capable to detect visible light spectrum, the method comprising:
- providing a first nano-assembly configured to perform a first spectrum detection;
- providing a second nano-assembly configured to perform a second spectrum detection;
- providing a third nano-assembly configured to perform a third spectrum detection;
- coupling a source to a drain by the first, second and the third nano-assemblies;
- providing at least two surface plasmon waveguides positioned between the source and the drain and juxtaposed to at least one of the nano-assemblies in a longitudinal direction of the at least one nano-assembly;
- and
- providing a transparent gate positioned in proximity to the at least one nano-assembly and the at least two surface plasmon waveguides, and further being arranged to extend substantially parallel to at least one of the source and the drain,
- wherein one of the at least two surface plasmon waveguides is positioned along a first side of the at least one nano-assembly, and another of the at least two surface plasmon waveguides is positioned along a second side of the at least one nano-assembly that is opposite the first side.
5 more elements
Dependencies are inferred from the claim text.