Exciton-Exciton Interaction and Optical Gain in Colloidal CdSe/CdS Dot/Rod Nanocrystals

被引：76
|
作者：
Saba, Michele [1 ,2 ]
Minniberger, Stefan [3 ]
Quochi, Francesco [1 ,2 ]
Roither, Juergen [3 ]
Marceddu, Marco [1 ,2 ]
Gocalinska, Agnieszka [1 ,2 ]
Kovalenko, Maksym V. [4 ]
Talapin, Dmitri V. [4 ]
Heiss, Wolfgang [3 ]
Mura, Andrea [1 ,2 ]
Bongiovanni, Giovanni [1 ,2 ]
机构：
[1] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy
[2] Univ Cagliari, SLACS CNR INFM, I-09042 Monserrato, Italy
[3] Johannes Kepler Univ Linz, Inst Solid State Phys & Semicond, A-4040 Linz, Austria
[4] Univ Chicago, Dept Chem, Chicago, IL 60637 USA
来源：
ADVANCED MATERIALS | 2009年 / 21卷 / 48期
基金：
奥地利科学基金会;
关键词：
SEMICONDUCTOR NANOCRYSTALS; SEEDED GROWTH; QUANTUM DOTS; CONFINEMENT;
D O I：
10.1002/adma.200901482
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Exciton-exciton interaction in dot/rod CdSe/CdS nanocrystals has proved to be very sensitive to the shape of nanocrystals, due to the unique band alignment between CdSe and CdS. Repulsive exciton-exciton interaction is demonstrated, which makes CdSe/CdS dot/rods promising gain media for solution-processable lasers, with projected pump threshold densities below 1 kW cm(-2) for continuous wave lasing.
引用
收藏
页码：4942 / +
页数：6
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