Memoirs of the Faculty of Engineering, Yamaguchi University

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Memoirs of the Faculty of Engineering, Yamaguchi University Volume 49 Issue 1
published_at 1998

ROOM-TEMPERATURE EXCITONIC LUMINESCENCE FROM CdS-BASED QUANTUM-WELL STRUCTURES

CdS系量子井戸構造における室温励起子発光
Watanabe Hidefumi
Yamashita Tatsuya
Yamada Yoichi
Taguchi Tsunemasa
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Descriptions
CdS-Zn_xCd_<1-x>S量子井戸構造を減圧有機金属気相成長法により作製し,その光学的性質をフォトルミネッセンス分光法により評価した。作製された量子井戸構造は,室温においても青色から緑色波長領域に明瞭な励起子発光を呈し,この系が可視短波長領域における発光デバイスとして有望であることが明らかにされた。また,この系のバンド構造を,格子歪みの影響を考慮したmodel-solid理論に基づいて導出し,実験結果との対応を考察した。その結果,観測された光学特性は,計算結果により比較的良く説明できることが明らかにされた。
Creator Keywords
CdS-Zn_xCd_<1-x>S MQW
band lineup
room-temperature excitonic luminescence
low-pressure MOCVD
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