High optical quality of InAs quantum dots with an InAlAsSb strain-reducing layer

Pei Chin Chiu, Wei Sheng Liu, Meng Jie Shiau, Jen Inn Chyi, Wen Yen Chen, Hsing Szu Chang, Tzu Min Hsu

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

The effects of a thin InAlAsSb strain-reducing layer (SRL) on the optical properties of InAs/GaAs quantum dots (QDs) are studied. The adoption of the InAlAsSb SRL results in higher emission intensity and better size uniformity than its InAlAs counterpart. InAs QDs capped with the InAlAsSb SRL reveal a large state separation of 103 meV and thermal activation energy of 530 meV. The increase in radiative efficiency and temperature stability is attributed to high carrier confinement and reduced defects by the InAlAsSb SRL.

原文???core.languages.en_GB???
主出版物標題IPRM'07
主出版物子標題IEEE 19th International Conference on Indium Phosphide and Related Materials - Conference Proceedings
頁面171-173
頁數3
DOIs
出版狀態已出版 - 2007
事件IPRM'07: IEEE 19th International Conference on Indium Phosphide and Related Materials - Matsue, Japan
持續時間: 14 5月 200718 5月 2007

出版系列

名字Conference Proceedings - International Conference on Indium Phosphide and Related Materials
ISSN(列印)1092-8669

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???event.eventtypes.event.conference???IPRM'07: IEEE 19th International Conference on Indium Phosphide and Related Materials
國家/地區Japan
城市Matsue
期間14/05/0718/05/07

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