Ultrafast Spatially Resolved Carrier Dynamics in Single CdSSe Nanobelts

被引：29

作者：

Gundlach, Lars ^{[1
]}

Piotrowiak, Piotr ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Chem, Newark, NJ 07102 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 28期

基金：

美国国家科学基金会;

关键词：

AUGER; PHOTOLUMINESCENCE; RECOMBINATION; FABRICATION; RELAXATION; NANOWIRES; GAIN;

D O I：

10.1021/jp9013509

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present ultrafast microscopy measurements on CdSSe semiconductor nanobelts addressing the early luminescence dynamics, charge transport, and charge carrier localization in individual nanoparticles. The diffraction limited spatial resolution Of Our femtosecond Kerr-gated microscope allowed its to address single particles and study the transport and localization in individual nanobelts. Microscopic "emission movies" consisting of 100 fs frames as well as time-resolved luminescence spectra of single CdSSe nanoparticles were recorded. The dramatically improved time-resolution enabled LIS to reveal the complex early emission dynamics of highly excited semiconductor nanobelts and to obtain Shockley-Read, nongeminate, and Auger recombination rates.

引用

页码：12162 / 12166

页数：5

共 31 条

[1]

AMAND T, 1986, PHYS REV B, V34, P2718, DOI 10.1103/PhysRevB.34.2718

[2] The pump power dependence of the femtosecond relaxation of CdSe nanoparticles observed in the spectral range from visible to infrared [J].