InN quantum dots on GaN nanowires grown by MOVPE
Author
Summary, in English
In this work, growth of InN quantum dots (QDs) on GaN nanowires (NWs) by metal-organic vapour phase epitaxy is demonstrated, illustrating the feasibility to combine 0D and 1D structures for nitride semiconductors. Selective area growth was used to generate arrays of c-oriented GaN NWs using Si3N4 as the mask material. In general, InN QDs tend to form at the NW edges between the m-plane side facets, but the QD growth can also be tuned to the side facets by controlling the growth temperature and the growth rate. TEM characterization reveals that I1-type stacking faults are formed in the QDs and originate from the misfit dislocations at the InN/GaN interface. Photoluminescence measurement at 4 K shows that the peak shifts to high energy with reduced dot size. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Publishing year
2014
Language
English
Pages
421-424
Publication/Series
physica status solidi (c)
Volume
11
Document type
Journal article
Publisher
Wiley-Blackwell
Topic
- Condensed Matter Physics
- Chemical Sciences
Keywords
- quantum dots
- nanowires
- nitride
- MOVPE
Conference name
10th International Conference on Nitride Semiconductors (ICNS)
Conference date
2013-08-25 - 2013-08-30
Status
Published
ISBN/ISSN/Other
- ISSN: 1862-6351