Consequence of shape elongation on emission asymmetry for colloidal CdSe/CdS nanoplatelets

被引：0

作者：

Fu Feng

Loan Thu Nguyen

Michel Nasilowski

Brice Nadal

Benoît Dubertret

Laurent Coolen

Agnès Maître

机构：

[1] Sorbonne Universités,Institute of Materials Science

[2] UPMC Univ Paris 06,Laboratoire de Physique et d’Etude des Matériaux, ESPCI

[3] CNRS-UMR 7588,undefined

[4] Institut des NanoSciences de Paris,undefined

[5] Vietnam Academy of Science and Technology,undefined

[6] UPMC Univ Paris 6,undefined

[7] CNRS,undefined

来源：

Nano Research | 2018年 / 11卷

关键词：

colloidal semiconductor nanoplatelet; emission dipole; emission polarization; emission pattern;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper, we demonstrate that for colloidal CdSe/CdS nanoplatelets, a rectangular shape induces emission asymmetry, in terms of both polarization and emission patterns. Polarimetry and emission pattern analyses are combined to provide information on the orientation of the transition dipoles involved in the nanoplatelet emission. It is shown that for rectangular nanoplatelets, the emission is polarized and the emission patterns are anisotropic, whereas they remain nonpolarized and isotropic for square nanoplatelets. This can be appropriately described by the dielectric antenna effect induced by the elongated shape of the rectangular platelet.

引用

页码：3593 / 3602

页数：9

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