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CAS IR Grid
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长春光学精密机械与物... [1]
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OAI收割 [1]
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会议论文 [1]
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2005 [1]
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发表日期:2005
内容类型:会议论文
专题:长春光学精密机械与物理研究所
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Formation and characteristics of quantum dots of wide band gap II-VI semiconductor (EI CONFERENCE)
会议论文
OAI收割
Fifth International Conference on Thin Film Physics and Applications, May 31, 2004 - June 2, 2004, Shanghai, China
Fan X. W.
;
Shan C. X.
;
Yang Y.
;
Zhang J. Y.
;
Liu Y. C.
;
Lu Y. M.
;
Shen D. Z.
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提交时间:2013/03/25
CdSe and ZnCdSe quantum dots (QDs) were grown under Stranski-Krastanow (S-K) mode by low-pressure metalorganic chemical vapor deposition (LP-MOCVD). The formation process of CdSe QDs below critical thickness was observed by atomic force microscopy (AFM). The formation mechanism of CdSe QDs below the critical thickness was due to the effect of surface diffusion and strain release. ZnCdSe QDs were grown based on the calculated critical thickness. Two kinds of variations in the ZnCdSe QDs appeared over time
the Ostwald ripening process and dot formation process. ZnSeS dots were grown under Volmer-Weber (V-W) mode. With increasing the growth duration
the size of dots becomes larger and the density decreases
which is explained by virtue of the surface free energy.