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Confined optical phonon modes in polar tetrapod nanocrystals detected by resonant inelastic light scattering

R. Krahne·G. Chilla·C. Schueller·L. Carbone·S. Kudera·G. Mannarini·L. Manna·D. Heitmannb·R. Cingolani
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Abstract

We investigated CdTe nanocrystal tetrapods of different sizes by resonant inelastic light scattering at room temperature and under cryogenic conditions. We observe a strongly resonant behavior of the phonon scattering with the excitonic structure of the tetrapods. Under resonant conditions we detect a set of phonon modes that can be understood as confined longitudinal-optical phonons, surface-optical phonons, and transverse-optical phonons in a nanowire picture.

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R. Krahne, G. Chilla, C. Schueller, L. Carbone, S. Kudera, G. Mannarini, L. Manna, D. Heitmannb, R. Cingolani. 2005-12-21. Confined optical phonon modes in polar tetrapod nanocrystals detected by resonant inelastic light scattering. https://doi.org/10.1021/nl0524492

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