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Temperature and injection current dependence of electroluminescence intensity in green and blue InGaN single-quantum-well light-emitting diodes
http://hdl.handle.net/10228/361
http://hdl.handle.net/10228/36167066232-90c1-4abc-a658-883a44b13bec
名前 / ファイル | ライセンス | アクション |
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1.1554475.pdf (186.8 kB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||
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公開日 | 2007-11-19 | |||||||||||
資源タイプ | ||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
資源タイプ | journal article | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Temperature and injection current dependence of electroluminescence intensity in green and blue InGaN single-quantum-well light-emitting diodes | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Hori, A.
× Hori, A.× Yasunaga, D.× 佐竹, 昭泰
WEKO
252
× 藤原, 賢三 |
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抄録 | ||||||||||||
内容記述タイプ | Abstract | |||||||||||
内容記述 | Temperature and injection current dependence of electroluminescence (EL) spectral intensity of the superbright green and blue InGaN single-quantum-well (SQW) light-emitting diodes has been studied over a wide temperature range (T = 15–300 K) and as a function of injection current level (0.1–10 mA). It is found that, when temperature is slightly decreased to 140 K, the EL intensity efficiently increases in both cases, as usually seen due to the improved quantum efficiency. However, with further decrease of temperature down to 15 K, unusual reduction of the EL intensity is commonly observed for both of the two diodes. At low temperatures the integrated EL intensity shows a clear trend of saturation with current, accompanying decreases of the EL differential quantum efficiency. We attribute the EL reduction due to trapping of injected carriers by nonradiative recombination centers. Its dependence on temperature and current shows a striking difference between the green and blue SQW diodes. That is, we find that the blue InGaN SQW diode with a smaller In concentration shows more drastic reduction of the EL intensity at lower temperatures and at higher currents than the green one. This unusual evolution of the EL intensity with temperature and current is due to less efficient carrier capturing by SQW. The carrier capture in the green and blue diodes also shows a keen difference owing to the different In content in the InGaN well. These results are analyzed within a context of rate equation model, assuming a finite number of radiative recombination centers. Importance of the efficient carrier capture processes by localized tail states within SQW at 180–300 K is thus pointed out for explaining the observed enhancement of radiative recombination of injected carriers in the presence of high-density misfit dislocations. | |||||||||||
書誌情報 |
Journal of Applied Physics 巻 93, 号 6, p. 3152-3157, 発行日 2003-03-15 |
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出版社 | ||||||||||||
出版者 | American Institute of Physics | |||||||||||
DOI | ||||||||||||
関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | https://doi.org/10.1063/1.1554475 | |||||||||||
NAID | ||||||||||||
関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | NAID | |||||||||||
関連識別子 | 120002440579 | |||||||||||
日本十進分類法 | ||||||||||||
主題Scheme | NDC | |||||||||||
主題 | 549 | |||||||||||
NCID | ||||||||||||
収録物識別子タイプ | NCID | |||||||||||
収録物識別子 | AA00693547 | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 0021-8979 | |||||||||||
著作権関連情報 | ||||||||||||
権利情報 | Copyright © 2003 American Institute of Physics | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | indium compounds | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | gallium compounds | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | wide band gap semiconductors | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | III-V semiconductors | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | light emitting diodes | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | nonradiative transitions | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | dislocations | |||||||||||
出版タイプ | ||||||||||||
出版タイプ | VoR | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
査読の有無 | ||||||||||||
値 | yes | |||||||||||
資料タイプ | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | Journal Article | |||||||||||
著者別名 | ||||||||||||
姓名 | Satake, Akihiro | |||||||||||
言語 | en | |||||||||||
姓名 | 佐竹, 昭泰 | |||||||||||
言語 | ja | |||||||||||
姓名 | サタケ, アキヒロ | |||||||||||
言語 | ja-Kana | |||||||||||
著者別名 | ||||||||||||
姓名 | Fujiwara, Kenzo | |||||||||||
言語 | en | |||||||||||
姓名 | 藤原, 賢三 | |||||||||||
言語 | ja | |||||||||||
姓名 | フジワラ, ケンゾウ | |||||||||||
言語 | ja-Kana | |||||||||||
著者所属 | ||||||||||||
Department of Electrical Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||||||||
著者所属 | ||||||||||||
Department of Electrical Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||||||||
著者所属 | ||||||||||||
Department of Electrical Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||||||||
著者所属 | ||||||||||||
Department of Electrical Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||||||||
情報源 | ||||||||||||
識別子タイプ | URI | |||||||||||
関連識別子 | http://www.aip.org/ | |||||||||||
関連名称 | http://www.aip.org/ |