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QHREM study of thermal stability of stacked self-assembled InP quantum dots

MPS-Authors
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Jin-Phillipp,  N. Y.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Zundel,  M. K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Phillipp,  F.
Scientific Facility Stuttgart Center for Electron Microscopy (Peter A. van Aken), Max Planck Institute for Solid State Research, Max Planck Society;

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Eberl,  K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Jin-Phillipp, N. Y., Zundel, M. K., Du, K., Phillipp, F., & Eberl, K. (2001). QHREM study of thermal stability of stacked self-assembled InP quantum dots. In Microscopy of Semiconducting Materials 2001. Proceedings of the Royal Microscopical Society Conference (pp. 93-96). Bristol: IOP Publishing LTD.


Cite as: https://hdl.handle.net/21.11116/0000-000E-E589-5
Abstract
Thermal stability of stacked self-assembled InP quantum dots
(QDs) is studied by quantitative high-resolution electron
microscopy (QHREM). The size and the shape of the QDs as well
as local lattice distortions on an atomic scale have been
determined directly from HREM images by the image processing
package LADIA. An anisotropic thermal instability of the
vertically stacked QDs is revealed. The preferential direction
of intermixing of InP QDs with their surrounding GaInP changes
at different stages of annealing. This anisotropy is attributed
to strain-assisted interdiffusion.