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
收藏
页码：307 / 308
页数：2
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