Detection of directed electron-hole recombination energy transfer from an ionic crystal matrix to self-assembled nanocrystals |
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Authors: | P G Baranov N G Romanov A G Badalyan D O Tolmachev V L Preobrazhenskii |
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Institution: | (1) Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russia |
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Abstract: | It is found that the energy released in the spin-dependent tunneling recombination of electron-hole pairs and self-trapped excitons in an ionic crystal matrix is directionally transferred to low-dimensional semiconductor structures embedded in the matrix as a result of self-assembled growth. The EPR spectra of electron and hole centers in the matrix crystal are detected by tunneling afterglow and photostimulated luminescence that are excited in the low-dimensional structure. |
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