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Your search keyword '"Voelskow, M."' showing total 6 results
Start Over Author "Voelskow, M." Journal applied physics letters
6 results on '"Voelskow, M."'

2. On-chip superconductivity via gallium overdoping of silicon

Author

Skrotzki, R., primary, Fiedler, J., additional, Herrmannsdörfer, T., additional, Heera, V., additional, Voelskow, M., additional, Mücklich, A., additional, Schmidt, B., additional, Skorupa, W., additional, Gobsch, G., additional, Helm, M., additional, and Wosnitza, J., additional

Published
2010
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6. Enhanced blue-violet emission by inverse energy transfer to the Ge-related oxygen deficiency centers via Er3+ ions in metal-oxide semiconductor structures.

Author

Kanjilal, A., Rebohle, L., Voelskow, M., Skorupa, W., and Helm, M.

Subjects
ELECTROLUMINESCENCE, ENERGY transfer, SILICON, NANOCRYSTALS, OPTICAL pumping, METAL oxide semiconductors
Abstract

It is generally believed that the 1.5 μm Er luminescence is enhanced by transferring energy from Si nanocrystals to the nearest Er3+ ions in Er-doped Si-rich SiO2 layers during optical pumping. Here, the influence of Ge nanocrystals instead of excess Si in the same environment is studied using electroluminescence technique on metal-oxide-semiconductor structures. An increase of the 400 nm electroluminescence intensity with a concomitant reduction of the Er-related emission is observed. This is explained in the light of an inverse energy transfer process from Er3+ to the Ge-related oxygen-deficiency centers. [ABSTRACT FROM AUTHOR]

Published
2009
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