Near-field spectroscopy of bimodal size distribution of InAs/AlGaAs quantum dots

We report on high-resolution photoluminescence (PL) spectroscopy of spatial structure of InAs/AlGaAs quantum dots (QDs) by using a near-field scanning optical microscope (NSOM). The double-peaked distribution of PL spectra is clearly observed, which is associated with the bimodal size distribution o...

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Bibliographic Details
Published inarXiv.org
Main Authors Young-Jun, Yu, Jeong, I T, Woo, J C, Jhe, Wonho
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 19.06.2005
Subjects
Aluminum gallium arsenides
Near field optical microscopes
Particle size distribution
Photoluminescence
Quantum dots
Spectroscopy
Spectrum analysis
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Summary:We report on high-resolution photoluminescence (PL) spectroscopy of spatial structure of InAs/AlGaAs quantum dots (QDs) by using a near-field scanning optical microscope (NSOM). The double-peaked distribution of PL spectra is clearly observed, which is associated with the bimodal size distribution of single QDs. In particular, the size difference of single QDs, represented by the doublet spectral distribution, can be directly observed by the NSOM images of PL.
ISSN:2331-8422
DOI:10.48550/arxiv.0504030