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液滴エピタキシー成長GaAs量子ドットの二峰性サイズ分布によるフォトルミネッセンスピークエネルギー温度依存性への影響
http://hdl.handle.net/10458/00010076
http://hdl.handle.net/10458/00010076447c17bd-321f-4420-a968-9a24589420be
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文 (1.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2020-10-30 | |||||
| タイトル | ||||||
| タイトル | 液滴エピタキシー成長GaAs量子ドットの二峰性サイズ分布によるフォトルミネッセンスピークエネルギー温度依存性への影響 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Effect of Bimodal Size Distribution on the Temperature Dependence for Photoluminescence Peak Energy in Droplet-Epitaxy-fabricated GaAs Quantum Dots | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Quantum dots | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | GaAs | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | AlGaAs | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Droplet epitaxy | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Photoluminescence | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Blue shift | |||||
| 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 | departmental bulletin paper | |||||
| 著者 |
宮内, 雄大
× 宮内, 雄大× 中村, 泰樹× 川畑, 公佑× 間野, 高明× 野田, 武司× 碇, 哲雄× 福山, 敦彦× 宮内, 雄大× Nakamura, Taiju× Kawabata, Kosuke× 間野, 高明× Noda, Takeshi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | GaAs-based Quantum dot (QD) laser diodes have been studied because they have advances of low threshold current density and high thermal stability. Since a Photoluminescence (PL) measurement is sensitive for the electronic structures in the QD, this is very useful tool for understanding the physical properties. A PL peak energy of GaAs QDs first obeyed the Varshni’s curve up to 100K and deviated to lower energy around 150 K. This red-shift had been explained by QD size distribution and steady state model. In contrast, we have found an additional thermal behavior that PL peak energy increased and followed again to the Varshni’s curve above 200 K. For such the anomalous temperature dependence, we focused on the difference in the inclination of temperature dependence between low and high temperature regions. We applied the temperature variation of transition energy described by the Bose-Einstein equation to the anomalous temperature dependence for red and blue-shift, respectively. It was found that small QD (QD height of 4.2 nm) and large QD (QD height of 5.7 nm) were dominant PL emission at below and above 200K, respectively. It was suggested an anomalous temperature dependence was come from a change of dominant PL emission from small to large QD with increasing temperature. The change for the inclination of the temperature dependence could be explained by the relationship between QD size and electron-lattice interaction. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 宮崎大学工学部紀要 en : Memoirs of Faculty of Engineering, University of Miyazaki 巻 49, p. 73-77, 発行日 2020-09 |
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| 出版者 | ||||||
| 出版者 | 宮崎大学工学部 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Faculty of Engineering, University of Miyazaki | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 05404924 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00732558 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
