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Zero-phonon linewidth in CdSe/ZnS core/shell nanorods.

Sasha Tavenner-Kruger·Young-Shin Park·Mark Lonergan·Ulrike Woggon·Hailin Wang
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Abstract

High-resolution spectral hole-burning studies of CdSe/ZnS core/shell nanorods reveal a sharp zero-phonon line, with a line width dependent on the measurement time scale. The zero-phonon line width is attributed to contributions from radiative decay, spectral diffusion induced by surface electric field fluctuations, and phonon-assisted migration of excitons localized in the nanorods. A decoherence rate as small as 4.5 GHz has been observed, when the effects of spectral diffusion are suppressed in the spectral hole-burning measurement. Comparison between zero-phonon line widths in nanorods and spherical nanocrystals also elucidates important differences in the decoherence process between the one- and zero-dimensional nanostructures.

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Cadmium CompoundsLightMaterials TestingNanotubesPhotochemistryScattering, RadiationSelenium CompoundsSemiconductorsZinc CompoundsJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.

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Sasha Tavenner-Kruger, Young-Shin Park, Mark Lonergan, Ulrike Woggon, Hailin Wang. 2006. Zero-phonon linewidth in CdSe/ZnS core/shell nanorods.. https://doi.org/10.1021/nl0613003

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