Investigation of the photoluminescence and modification of InGaP/GaAs/InGaAs heterostructures by near-field scanning microscopy |
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Authors: | S V Gaponov V F Dryakhlushin V L Mironov D G Revin |
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Affiliation: | (1) Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod |
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Abstract: | This study deals with the local spectroscopy and modification of semiconducting InGaP/GaAs/InGaAs quantum-well heterostructures
by near-field scanning optical microscopy. The spatial distribution of the photoluminescence intensity in these structures
is investigated and spatial nonuniformity of the photoluminescence is observed as a result of the nonuniform properties of
the InGaP layers. It is shown for the first time that local quenching of the photoluminescence may be achieved by optically
induced impurity diffusion near the quantum well, and this may be utilized to develop low-dimension semiconducting devices.
Pis’ma Zh. Tekh. Fiz. 23, 20–25 (August 26, 1997) |
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