Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings
Type-II self-assembled GaSb/GaAs nanostructures have been grown by molecular-beam epitaxy and studied by atomic-force microscopy, transmission electron microscopy, and power-dependent magnetophotoluminescence. Nanostructures on the sample surface are found to be entirely dotlike, while capped nanost...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24802/1/Tuning%20the%20properties%20of%20exciton%20complexes%20in%20self.pdf |
| _version_ | 1825925646849671168 |
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| author | Ahmad Kamarudin, Mazliana Hayne, Manus Young, Robert J. Zhuang, Qian Dong Ben, Teresa Molina, Sergio I. |
| author_facet | Ahmad Kamarudin, Mazliana Hayne, Manus Young, Robert J. Zhuang, Qian Dong Ben, Teresa Molina, Sergio I. |
| author_sort | Ahmad Kamarudin, Mazliana |
| collection | UPM |
| description | Type-II self-assembled GaSb/GaAs nanostructures have been grown by molecular-beam epitaxy and studied by atomic-force microscopy, transmission electron microscopy, and power-dependent magnetophotoluminescence. Nanostructures on the sample surface are found to be entirely dotlike, while capped nanostructures are predominantly ringlike. Moreover, an in situ anneal process applied after thinly capping the dots is shown to enhance the severity of the rings and relax the strain in the matrix in the proximity of the GaSb, resulting in a change to the spatial configuration of the exciton complexes and their optical properties. |
| first_indexed | 2024-03-06T08:00:56Z |
| format | Article |
| id | upm.eprints-24802 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:00:56Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | upm.eprints-248022016-02-10T06:17:59Z http://psasir.upm.edu.my/id/eprint/24802/ Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings Ahmad Kamarudin, Mazliana Hayne, Manus Young, Robert J. Zhuang, Qian Dong Ben, Teresa Molina, Sergio I. Type-II self-assembled GaSb/GaAs nanostructures have been grown by molecular-beam epitaxy and studied by atomic-force microscopy, transmission electron microscopy, and power-dependent magnetophotoluminescence. Nanostructures on the sample surface are found to be entirely dotlike, while capped nanostructures are predominantly ringlike. Moreover, an in situ anneal process applied after thinly capping the dots is shown to enhance the severity of the rings and relax the strain in the matrix in the proximity of the GaSb, resulting in a change to the spatial configuration of the exciton complexes and their optical properties. American Physical Society 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24802/1/Tuning%20the%20properties%20of%20exciton%20complexes%20in%20self.pdf Ahmad Kamarudin, Mazliana and Hayne, Manus and Young, Robert J. and Zhuang, Qian Dong and Ben, Teresa and Molina, Sergio I. (2011) Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings. Physical Review B: Condensed Matter and Materials Physics, 83 (11). pp. 1-6. ISSN 1098-0121; ESSN:1550-235X http://dx.doi.org/10.1103/PhysRevB.83.115311 10.1103/PhysRevB.83.115311 |
| spellingShingle | Ahmad Kamarudin, Mazliana Hayne, Manus Young, Robert J. Zhuang, Qian Dong Ben, Teresa Molina, Sergio I. Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings |
| title | Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings |
| title_full | Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings |
| title_fullStr | Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings |
| title_full_unstemmed | Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings |
| title_short | Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings |
| title_sort | tuning the properties of exciton complexes in self assembled gasb gaas quantum rings |
| url | http://psasir.upm.edu.my/id/eprint/24802/1/Tuning%20the%20properties%20of%20exciton%20complexes%20in%20self.pdf |
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