Size Dependent Femtosecond Electron Cooling Dynamics in CdSe Quantum Rods

Pingrong Yu; Jovan M. Nedeljkovic; Phil A. Ahrenkiel; Randy J. Ellingson; Arthur J. Nozik

doi:10.1021/nl049524d

Size Dependent Femtosecond Electron Cooling Dynamics in CdSe Quantum Rods

Pingrong Yu, Jovan M. Nedeljkovic, Phil A. Ahrenkiel, Randy J. Ellingson, Arthur J. Nozik

Chemistry and Nanoscience

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63 Scopus Citations

Abstract

Electronic relaxation dynamics of photoexcited CdSe quantum rods have been studied with femtosecond transient absorption spectroscopy. Samples with the same length, ∼30 nm, but with different diameters, 2.5 and 8.0 nm, were investigated. We found that the intraband energy relaxation is about 8 times faster in the thin rods than in the thick ones. A comparison is made between relaxation dynamics in quantum rods and dots, and different relaxation mechanisms are discussed.

Original language	American English
Pages (from-to)	1089-1092
Number of pages	4
Journal	Nano Letters
Volume	4
Issue number	6
DOIs	https://doi.org/10.1021/nl049524d https://doi.org/10.1021/nl049524d
State	Published - 2004

NREL Publication Number

NREL/JA-590-36928

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title = "Size Dependent Femtosecond Electron Cooling Dynamics in CdSe Quantum Rods",

abstract = "Electronic relaxation dynamics of photoexcited CdSe quantum rods have been studied with femtosecond transient absorption spectroscopy. Samples with the same length, ∼30 nm, but with different diameters, 2.5 and 8.0 nm, were investigated. We found that the intraband energy relaxation is about 8 times faster in the thin rods than in the thick ones. A comparison is made between relaxation dynamics in quantum rods and dots, and different relaxation mechanisms are discussed.",

author = "Pingrong Yu and Nedeljkovic, \{Jovan M.\} and Ahrenkiel, \{Phil A.\} and Ellingson, \{Randy J.\} and Nozik, \{Arthur J.\}",

year = "2004",

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pages = "1089--1092",

journal = "Nano Letters",

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publisher = "American Chemical Society",

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AU - Yu, Pingrong

AU - Nedeljkovic, Jovan M.

AU - Ahrenkiel, Phil A.

AU - Ellingson, Randy J.

AU - Nozik, Arthur J.

PY - 2004

Y1 - 2004

N2 - Electronic relaxation dynamics of photoexcited CdSe quantum rods have been studied with femtosecond transient absorption spectroscopy. Samples with the same length, ∼30 nm, but with different diameters, 2.5 and 8.0 nm, were investigated. We found that the intraband energy relaxation is about 8 times faster in the thin rods than in the thick ones. A comparison is made between relaxation dynamics in quantum rods and dots, and different relaxation mechanisms are discussed.

AB - Electronic relaxation dynamics of photoexcited CdSe quantum rods have been studied with femtosecond transient absorption spectroscopy. Samples with the same length, ∼30 nm, but with different diameters, 2.5 and 8.0 nm, were investigated. We found that the intraband energy relaxation is about 8 times faster in the thin rods than in the thick ones. A comparison is made between relaxation dynamics in quantum rods and dots, and different relaxation mechanisms are discussed.

UR - https://www.scopus.com/pages/publications/3042710918

U2 - 10.1021/nl049524d

DO - 10.1021/nl049524d

M3 - Article

AN - SCOPUS:3042710918

SN - 1530-6984

VL - 4

SP - 1089

EP - 1092

JO - Nano Letters

JF - Nano Letters

IS - 6

ER -

Size Dependent Femtosecond Electron Cooling Dynamics in CdSe Quantum Rods

Abstract

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