Time-resolved study of stimulated emission in ZnO tetrapod nanowires

被引：56

作者：

Leung, YH

Kwok, WM

Djurisic, AB

Phillips, DL

Chan, WK

机构：

[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

来源：

NANOTECHNOLOGY | 2005年 / 16卷 / 04期

关键词：

D O I：

10.1088/0957-4484/16/4/040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZnO tetrapod nanowires were fabricated by evaporation of Zn in a N-2 gas flow. Stimulated emission with a threshold of similar to 100 mu J cm(-2) was observed and the linewidths of individual modes were in the range 0.7-0.9 nm. Time-resolved measurements have been performed at different excitation powers. With an increase of the pump power, the transition from exciton stimulated emission to the electron-hole plasma regime can be clearly observed. Both electron-hole plasma and exciton emission have decay times under 10 ps.

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收藏

页码：579 / 582

页数：4

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