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Growth of self-assembled PbSe quantum-dots on GaSb(100) by liquid phase epitaxy. .

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<mark>Journal publication date</mark>7/12/2002
<mark>Journal</mark>Journal of Physics D: Applied Physics
Issue number23
Number of pages5
Pages (from-to)3091-3095
<mark>Original language</mark>English


Self-assembled PbSe quantum-dots (QD) have been grown on GaSb(100) substrates from the liquid phase. A Pb-rich melt at 517degreesC was used with 10degreesC supercooling and with a short (10 Ins) melt-substrate contact time. Atomic force microscopy has revealed that the PbSe QDs are 4-10 nm in height and 10-40 nm in diameter, with an area density of 1.7 x 10(10) cm(-2). The growth of QDs occurs in the Volmer-Weber mode and is a result of the difference in lattice structures between the PbSe and GaSb rather than the lattice constants.