PHOTODETECTOR
PROBLEM TO BE SOLVED: To provide a photo-detector provided with a quantum cascade structure capable of taking advantage of the optical absorption of transition between quantum sub-bands and having a sensitive wavelength band expanded.SOLUTION: A photo-detector 1A is provided with a layered structure...
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| creator | AKAHORI WATARU NAKAJIMA KAZUTOSHI YAMANISHI MASAMICHI HIROHATA TORU FUJITA KAZUMASA ARAGAKI MINORU |
| description | PROBLEM TO BE SOLVED: To provide a photo-detector provided with a quantum cascade structure capable of taking advantage of the optical absorption of transition between quantum sub-bands and having a sensitive wavelength band expanded.SOLUTION: A photo-detector 1A is provided with a layered structure 3 having a first layer 4 comprising a first metal or first semiconductor, a semiconductor structure layer 5 stacked on top of the first layer 4 and having electrons excited by Plasmon resonance, and a second layer 5 stacked on top of the semiconductor structure layer 5 and comprising a second metal or second semiconductor. The semiconductor structure layer 5 has a quantum cascade structure, the quantum cascade structure including an active region 5a having a first quantum higher level and a second quantum higher level lower than the first quantum higher level, and an injector region 5b for transporting electrons excited in the active region 5a. |
| format | Patent |
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| subjects | BASIC ELECTRIC ELEMENTS COLORIMETRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS RADIATION PYROMETRY SEMICONDUCTOR DEVICES TESTING |
| title | PHOTODETECTOR |
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