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Photoluminescence study of low density In As quantum clusters grown by molecular beam epitaxy.
- Source :
-
Nanotechnology . 2/17/2012, Vol. 23 Issue 6, p1-6. 6p. - Publication Year :
- 2012
-
Abstract
- We report a systematic optical spectroscopy study of low density InAs quantum clusters (QCs) grown by molecular beam epitaxy. The photoluminescence (PL) spectra show emission features of a wetting layer (WL) which contains hybridized quantum well states. The low-energy tail of the QCs' PL profile is actually an ensemble of some sharp lines, originating from the emission of different exciton states (e.g. X, X*, XX*) in a single quasi-three-dimensional (Q3D) cluster as detailed in the micro-PL spectra. The temperature dependence of PL spectra indicates photocarrier distribution and transport in the QC-WL system. Furthermore, this small InAs Q3D cluster is integrated with a distributed Bragg reflector structure, and using optical excitation creates a single photon source with the second-order correlation function of g(2)(0) = 0:31 at 16 K. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574484
- Volume :
- 23
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Nanotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 74166124
- Full Text :
- https://doi.org/10.1088/0957-4484/23/6/065706