Low-Dark-Current Large-Area Narrow-Band Photodetector Using InGaN/GaN Layers on Sapphire
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- Ohsawa Jun
- Toyota Technological Institute
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- Kozawa Takahiro
- Toyota Central R&D Labs., Inc.
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- Hayashi Hiroyuki
- Toyota Technological Institute
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- Fujishima Osamu
- Toyota Central R&D Labs., Inc.
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- Itoh Hiroshi
- Toyota Central R&D Labs., Inc.
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抄録
A metal–semiconductor–metal structure was fabricated on a 20-nm-thick InGaN layer, and showed a responsivity of over 0.1 A/W to the wavelength of 400 nm at a bias of 1 V. The photocurrent was almost linear to the power of the incident light in three decades. The Schottky interdigital electrodes kept the dark current to less than 100 pA at 10 V despite its large detecting area of 1 mm2. The device showed fast responses on the order of 10 ns to optical impulses from a 407 nm laser diode. Biasing at 1 V or lower is effective in suppressing the sensitivity in the wavelength range shorter than 350 nm when illuminated from the substrate side through a 2-μm-thick GaN layer, resulting in a narrow-band detector for the 400 nm band.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 44 (20-23), L623-L625, 2005
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390282681240773376
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- NII論文ID
- 10016150582
- 130004533360
- 210000059603
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- NII書誌ID
- AA11906093
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 7339056
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可