A new method to epitaxially grow long-range ordered self-assembled InAs quantum dots on (110) GaAs
Bauer, J. · Schuh, D. · Uccelli, E. · Schulz, R. · Kress, A. · Hofbauer, F. · Finley, J. J. · Abstreiter, G.
Original · EN
We report on a new approach for positioning of self-assembled InAs quantum dots on (110) GaAs with nanometer precision. By combining self-assembly of quantum dots with molecular beam epitaxy on in-situ cleaved surfaces (cleaved-edge overgrowth) we have successfully fabricated arrays of long-range ordered InAs quantum dots. Both atomic force microscopy and micro-photoluminescence measurements demonstrate the ability to control size, position, and ordering of the quantum dots. Furthermore, single dot photoluminescence investigations confirm the high optical quality of the quantum dots fabricated.
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