教師資料查詢 | 類別: 期刊論文 | 教師: 鄭振益 JEN, JEN-YI (瀏覽個人網頁)

標題:Photoluminescence characterization of ZnCdSe/ZnSe quantum dot systems with different ZnCdSe coverages
學年96
學期2
出版(發表)日期2008/02/01
作品名稱Photoluminescence characterization of ZnCdSe/ZnSe quantum dot systems with different ZnCdSe coverages
作品名稱(其他語言)
著者Jen, Jen-Yi; Linb, Chen-Yen;Lee,Jia-Ren; Lu, Chien-Rong
單位淡江大學物理學系
出版者Kidlington: Pergamon
著錄名稱、卷期、頁數Journal of Physics and Chemistry of Solids 69(2-3), pp.485-489
摘要We have characterized the temperature and excitation power density dependence of the photoluminescence (PL) spectra from ZnCdSe/ZnSe quantum dot (QD) system with different ZnCdSe coverages. A single spectral peak was observed from the sample composed of thick ZnCdSe layers while two peaks were observed from those with thin ZnCdSe layers. The temperature dependence of the peak position and width indicated that the spectral features originated from three-dimensionally confined QD systems. The relative intensity of spectral peaks remained the same even when the excitation power density was 80-fold weaker, and verified that different spectral lines originated from different groups of QDs instead of emissions from different excited states within one group of QDs. The thickness variation of spectral profiles also characterized the growth-mode evolution with the ZnCdSe thickness.
關鍵字A. Nanostructure;A. Semiconductors;D. Luminescence
語言英文
ISSN0022-3697
期刊性質國外
收錄於
產學合作
通訊作者Lu, Chien-Rong
審稿制度
國別英國
公開徵稿
出版型式紙本
相關連結
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