Size Dependent Femtosecond Electron Cooling Dynamics in CdSe Quantum Rods

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

Research output: Contribution to journalArticlepeer-review

61 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 languageAmerican English
Pages (from-to)1089-1092
Number of pages4
JournalNano Letters
Volume4
Issue number6
DOIs
StatePublished - 2004

NREL Publication Number

  • NREL/JA-590-36928

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