Title of article
Thermodynamic analysis of the shape, anisotropy and formation process of InAs/InP(0 0 1) quantum dots and quantum sticks grown by metalorganic vapor phase epitaxy
Author/Authors
Saint-Girons، نويسنده , , G. and Michon، نويسنده , , A. and Sagnes، نويسنده , , I. and Beaudoin، نويسنده , , G. and Patriarche، نويسنده , , G.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2007
Pages
4
From page
2765
To page
2768
Abstract
This study describes the origin of the size and shape anisotropy of InAs/InP(0 0 1) quantum dots (QDs) grown by metalorganic vapor phase epitaxy (MOVPE). The geometry of the QDs is determined by carefully analyzing transmission electron microscopy (TEM) images. An analytical model adapted to our QD geometry is used to understand the formation mechanism of the QDs, and to describe the origin of their size dispersion. A shape transition from QDs to elongated quantum sticks (QS) is observed under As-poor growth conditions. This transition, driven by thermodynamics, is clearly described by our model.
Keywords
Quantum dots , Thermodynamics , InAs/InP , Formation process , MOVPE
Journal title
Surface Science
Serial Year
2007
Journal title
Surface Science
Record number
1701027
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