The effect of diffusion on formation of self-assembled CdSe quantum dots

The effect of diffusion on formation of self-assembled CdSe quantum dots (SAQDs) was studied in this paper. Two kinds of diffusion were observed during the growth of CdSe layer. Surface diffusion was confirmed by atomic force microscopy (AFM). Interdiffusion was verified by the photoluminescence (PL...

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Bibliographic Details
Published in:Journal of crystal growth 2001-05, Vol.225 (2-4), p.431-434
Main Authors: Yang, Yi, Shen, D.Z., Zhang, J.Y., Fan, X.W., Zhen, Z.H., Zhao, X.W., Zhao, D.X., Liu, Y.N.
Format: Article
Language:English
Subjects:
A1. Atomic force microscopy
A1. Diffusion
A1. Low dimensional structures
A3. Metalorganic chemical vapor deposition
B1. Cadmium compounds
B2. Semiconducting II–VI materials
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials science
Nanoscale materials and structures: fabrication and characterization
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:The effect of diffusion on formation of self-assembled CdSe quantum dots (SAQDs) was studied in this paper. Two kinds of diffusion were observed during the growth of CdSe layer. Surface diffusion was confirmed by atomic force microscopy (AFM). Interdiffusion was verified by the photoluminescence (PL) and X-ray diffraction measurement. The surface diffusion might help to form quantum dots. However, the interdiffusion could prevent the formation of quantum dots.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(01)00910-1