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

被引：35

作者：

Krahne, R

Chilla, G

Schüller, C

Carbone, L

Kudera, S

Mannarini, G

Manna, L

Heitmann, D

Cingolani, R

机构：

[1] Univ Lecce, Natl Nanotechnol Lab, CNR, INFM,Ist Super Univ Formaz Interdisciplinare, I-73100 Lecce, Italy

[2] Univ Hamburg, Inst Phys Appl, D-20355 Hamburg, Germany

来源：

NANO LETTERS | 2006年 / 6卷 / 03期

关键词：

D O I：

10.1021/nl0524492

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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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收藏

页码：478 / 482

页数：5

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