Confinement effects on optical phonons in polar tetrapod nanocrystals detected by resonant inelastic light scattering.

作者信息

Krahne Roman, Chilla Gerwin, Schüller Christian, Carbone Luigi, Kudera Stefan, Mannarini Gianandrea, Manna Liberato, Heitmann Detlef, Cingolani Roberto

机构信息

National Nanotechnology Laboratory of CNR-INFM c/o Istituto Superiore Universitario di Formazione Interdisciplinare, Università di Lecce, Via per Arnesano, 73100 Lecce, Italy.

出版信息

Nano Lett. 2006 Mar;6(3):478-82. doi: 10.1021/nl0524492.

DOI:10.1021/nl0524492

PMID:16522046

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.

摘要