Study of the radiative recombination processes in tetrapod-shaped CdTe nanocrystals

被引：0

作者：

Morello, G. ^{[1
]}

Tari, D. ^{[1
]}

Carbone, L. ^{[1
]}

Manna, L. ^{[1
]}

Cingolani, R. ^{[1
]}

De Giorgi, M. ^{[1
]}

机构：

[1] Univ Salento, NNL, CNR, INFM,Distretto Tecnol ISUFI, I-73100 Lecce, Italy

来源：

PHYSICS OF SEMICONDUCTORS | 2009年 / 1199卷

关键词：

Nanocrystals; time-resolved photoluminescence;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work we report the time dependence emission properties of photoexcited carriers in CdTe tetrapod nanocrystals, by using time-resolved photoluminescence spectroscopy. The emission dynamics of the ground and excited state of a tetrapod-structure have pointed out different temporal behaviours ascribed to different carrier relaxation mechanisms. By monitoring the transient emission spectra at different delay times, a remarkable change in the energy position of the lower energy state has been observed, attributable to a photoinduced screening of an internal electric field, originating, in turn, from the ground state charge separation.

引用

页码：307 / 308

页数：2