Ultrafast Electron-Hole Dynamics in Core/Shell CdSe/CdS Dot/Rod Nanocrystals

被引：139

作者：

Lupo, Maria Grazia ^{[1
,2
]}

Della Sala, Fabio ^{[2
]}

Carbone, Luigi ^{[2
]}

Zavelani-Rossi, Margherita ^{[1
]}

Fiore, Angela ^{[2
]}

Lueer, Larry ^{[3
]}

Polli, Dario ^{[1
]}

Cingolani, Roberto ^{[2
]}

Manna, Liberato ^{[2
]}

Lanzani, Guglielmo ^{[1
]}

机构：

[1] Politecn Milan, IIT, Dipartimento Fis, I-20133 Milan, Italy

[2] NNL, I-73100 Lecce, Italy

[3] Politecn Milan, CNR, INFM, Natl Lab Ultrafast & Ultraintense Opt Sci, I-20133 Milan, Italy

来源：

NANO LETTERS | 2008年 / 8卷 / 12期

关键词：

D O I：

10.1021/nl8028366

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigated the transient bleaching and absorption of the asymmetric core/shell CdSe/CdS nanorods using the pump-probe technique. We observed ultrafast carrier relaxation and identified hole localization dynamics with 650 +/- 80 fs time constant. Upon pumping the CdSe core, we found an intense bleaching signal in the CdS spectral region, which we assigned to the delocalization of the electronic wave function on the basis of envelope-function theoretical calculations.

引用

页码：4582 / 4587

页数：6

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