Maes, Jochen and Hayne, M and Manz, Yvonne M and Schmidt, Oliver G and Eberl, Karl and Moshchalkov, Victor V (2002) Charge confinement and uniformity of stacked InP quantum dots studied by magneto-optical spectroscopy. Physica E: Low-dimensional Systems and Nanostructures, 13 (2-4). pp. 203-207. ISSN 1386-9477
Full text not available from this repository.Abstract
We have studied the magneto-photo luminescence (PL) of triply stacked layers of self-assembled InP quantum dots, For a small separation of the uppermost dot in (he triple stack from the other two closely stacked layers, only one PL peak is observed, whereas for a large separation two PL peaks are present: a broad low-energy and a narrow high-energy peak. We propose a model in which the low-energy peak is associated with the uppermost dot where alignment faults result in enhanced size fluctuations, broadening the line, The narrow high-energy peak originates from charges located in the double stack. In the large separation regime, an increased broadening of the PL line-width indicates that the size fluctuations are augmented as the layer separation is increased from 15 to 30 nm. (C) 2002 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physica E: Low-dimensional Systems and Nanostructures |
| Uncontrolled Keywords: | self-assembled quantum dots ; InP ; pulsed magnetic fields ; ELECTRON ; GROWTH |
| Subjects: | UNSPECIFIED |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 49842 |
| Deposited By: | ep_importer_pure |
| Deposited On: | 20 Sep 2011 09:22 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 19:32 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/49842 |
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