| Literature DB >> 16089485 |
Jaakko Sormunen1, Juha Riikonen, Marco Mattila, Jouni Tiilikainen, Markku Sopanen, Harri Lipsanen.
Abstract
Transformation of self-assembled InAs quantum dots (QDs) on InP(100) into quantum rings (QRs) is studied. In contrast to the typical approach to III--V semiconductor QR growth, the QDs are not capped to form rings. Atomic force micrographs reveal a drastic change from InAs QDs into rings after a growth interruption in tertiarybutylphosphine ambient. Strain energy relief in the InAs QD is discussed and a mechanism for dot-to-ring transformation by As/P exchange reactions is proposed.Entities:
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Year: 2005 PMID： 16089485 DOI： 10.1021/nl050646v
Source DB: PubMed Journal: Nano Lett ISSN： 1530-6984 Impact factor: 11.189