Quantization of multiparticle auger rates in semiconductor quantum dots

  title={Quantization of multiparticle auger rates in semiconductor quantum dots},
  author={Klimov and Mikhailovsky and McBranch and Leatherdale and Bawendi},
  volume={287 5455},
We have resolved single-exponential relaxation dynamics of the 2-, 3-, and 4-electron-hole pair states in nearly monodisperse cadmium selenide quantum dots 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… CONTINUE READING
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