Quantization of multiparticle Auger rates in semiconductor quantum dots

Victor I Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, M. G. Bawendi

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Abstract

We have resolved single-exponential relaxation dynamics of the 2-, 3-, and 4-electron-hole pair states in nearly monodisperse cadmium selenide quantum clots with radii ranging from 1 to 4 nanometers. Comparison of the discrete relaxation constants measured for different multiple-pair states indicates that the carrier decay rate is cubic in carrier concentration, which is characteristic of an Auger process. We observe that in the quantum- confined regime, the Auger constant is strongly size-dependent and decreases with decreasing the quantum dot size as the radius cubed.

Original languageEnglish
Pages (from-to)1011-1014
Number of pages4
JournalScience
Volume287
Issue number5455
DOIs
Publication statusPublished - Feb 11 2000

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Cite this

Klimov, V. I., Mikhailovsky, A. A., McBranch, D. W., Leatherdale, C. A., & Bawendi, M. G. (2000). Quantization of multiparticle Auger rates in semiconductor quantum dots. Science, 287(5455), 1011-1014. https://doi.org/10.1126/science.287.5455.1011