We demonstrate self-alignment of epitaxial Ag nanocrystals on top of low-density near-surface InAs quantum dots (QDs) grown by molecular beam epitaxy. The Ag nanocrystals support a surface plasmon resonance that can be tuned to the emission wavelength of the QDs. Photoluminescence measurements of such hybrid metal-semiconductor nanostructures reveal large enhancement of the emission intensity. Our concept of epitaxial self-alignment enables the integration of plasmonic functionality with electronic and photonic semiconductor devices operating down to the single QD level. © 2011 American Institute of Physics.
Urbanczyk, A., Van Otten, F., Notzel, R. (2011). Self-aligned epitaxial metal-semiconductor hybrid nanostructures for plasmonics. APPLIED PHYSICS LETTERS, 98(24) [10.1063/1.3596460].
Self-aligned epitaxial metal-semiconductor hybrid nanostructures for plasmonics
Notzel R.
2011
Abstract
We demonstrate self-alignment of epitaxial Ag nanocrystals on top of low-density near-surface InAs quantum dots (QDs) grown by molecular beam epitaxy. The Ag nanocrystals support a surface plasmon resonance that can be tuned to the emission wavelength of the QDs. Photoluminescence measurements of such hybrid metal-semiconductor nanostructures reveal large enhancement of the emission intensity. Our concept of epitaxial self-alignment enables the integration of plasmonic functionality with electronic and photonic semiconductor devices operating down to the single QD level. © 2011 American Institute of Physics.
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