Auger recombination and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots

Yingli Qu; Wei Ji; Yuangang Zheng; Jackie Y. Ying

doi:10.1063/1.2716067

Auger recombination and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots

Yingli Qu^*, Wei Ji, Yuangang Zheng, Jackie Y. Ying

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Auger recombination, quantized Auger rate, and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots have been investigated systematically with femtosecond Z scans and transient absorption measurements. The Auger constant is revealed to be on the order of 10 ^-30 cm6 s^-1, while the intraband absorption cross sections are found to be in the range of 10^-18-10^-17 cm ². The authors' experimental evidence demonstrates that the Auger recombination or the intraband absorption takes place under the condition that the average electron-hole pair per quantum dot is in excess of the unity.

Original language	English
Article number	133112
Journal	Applied Physics Letters
Volume	90
Issue number	13
DOIs	https://doi.org/10.1063/1.2716067
State	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2716067

Cite this

@article{e1c8653901c946ad9eee75d1d973d2e3,

title = "Auger recombination and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots",

abstract = "Auger recombination, quantized Auger rate, and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots have been investigated systematically with femtosecond Z scans and transient absorption measurements. The Auger constant is revealed to be on the order of 10 -30 cm6 s-1, while the intraband absorption cross sections are found to be in the range of 10-18-10-17 cm 2. The authors' experimental evidence demonstrates that the Auger recombination or the intraband absorption takes place under the condition that the average electron-hole pair per quantum dot is in excess of the unity.",

author = "Yingli Qu and Wei Ji and Yuangang Zheng and Ying, \{Jackie Y.\}",

year = "2007",

doi = "10.1063/1.2716067",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "13",

}

TY - JOUR

T1 - Auger recombination and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots

AU - Qu, Yingli

AU - Ji, Wei

AU - Zheng, Yuangang

AU - Ying, Jackie Y.

PY - 2007

Y1 - 2007

N2 - Auger recombination, quantized Auger rate, and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots have been investigated systematically with femtosecond Z scans and transient absorption measurements. The Auger constant is revealed to be on the order of 10 -30 cm6 s-1, while the intraband absorption cross sections are found to be in the range of 10-18-10-17 cm 2. The authors' experimental evidence demonstrates that the Auger recombination or the intraband absorption takes place under the condition that the average electron-hole pair per quantum dot is in excess of the unity.

AB - Auger recombination, quantized Auger rate, and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots have been investigated systematically with femtosecond Z scans and transient absorption measurements. The Auger constant is revealed to be on the order of 10 -30 cm6 s-1, while the intraband absorption cross sections are found to be in the range of 10-18-10-17 cm 2. The authors' experimental evidence demonstrates that the Auger recombination or the intraband absorption takes place under the condition that the average electron-hole pair per quantum dot is in excess of the unity.

UR - https://www.scopus.com/pages/publications/34047159392

U2 - 10.1063/1.2716067

DO - 10.1063/1.2716067

M3 - Article

AN - SCOPUS:34047159392

SN - 0003-6951

VL - 90

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

M1 - 133112

ER -

Auger recombination and intraband absorption of two-photon-excited carriers in colloidal CdSe quantum dots

Abstract

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this