@article{oai:miyazaki-u.repo.nii.ac.jp:00006203,
 author = {宮内, 雄大 and Miyauchi, Yudai and 中村, 泰樹 and 川畑, 公佑 and 間野, 高明 and Mano, Takaaki and 野田, 武司 and Ikari, Tetsuo and 碇, 哲雄 and Fukuyama, Atsuhiko and 福山, 敦彦 and 宮内, 雄大 and Miyauchi, Yudai and Nakamura, Taiju and Kawabata, Kosuke and 間野, 高明 and Mano, Takaaki and Noda, Takeshi},
 journal = {宮崎大学工学部紀要, Memoirs of Faculty of Engineering, University of Miyazaki},
 month = {Sep},
 note = {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.},
 pages = {73--77},
 title = {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},
 volume = {49},
 year = {2020},
 yomi = {ミヤウチ, ユウダイ and マノ, タカアキ and イカリ, テツオ and フクヤマ, アツヒコ and ミヤウチ, ユウダイ and マノ, タカアキ}
}