Hokkaido University

Yoshiaki Nishijima

Hiroaki Misawa

Kosei Ueno

Kei Murakoshi

The present invention has an object to provide a photoelectric conversion device which can be manufactured through a simple manufacturing process, achieve photoelectric conversion over a wide range of wavelength regions, and attain high photoelectric conversion efficiency even in the infrared wavelength region, a photodetection device, and a photodetection method. This photoelectric conversion deviceincludes a substratecontaining single crystalline titanium dioxide, adhesion layersformed on a surfaceof the substrate, metal microstructure bodies, each of which has a volume of 1,000 nmor more and 3,000,000 nmor less, arranged at predetermined intervals in a predetermined direction on surfaces of the adhesion layers, a containerfor containing an electrolyte solution L in an arrangement region of the metal microstructure bodieson the surfaceof the substrate, a conductive layerformed on a rear surfaceof the substrate, and a counter electrodein contact with the electrolyte solution L in the container; and the metal microstructure bodiesadhere onto the substratethrough the adhesion layers, a Schottky barrier is formed at an interface of the substratewith the metal microstructure bodies, and photoelectric conversion is carried out for light in an infrared region by utilizing a plasmon resonance phenomenon.

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Sapporo, Japan

Yoshiaki Nishijima