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- W2004141325 abstract "We independently determine the subpicosecond cooling rates for holes and electrons in CdSe quantum dots using time-resolved luminescence and time-resolved TeraHertz spectroscopy. The rate of hole cooling, following photoexcitation of the quantum dots, depends critically on the <i>electron</i> excess energy. This constitutes a direct proof of electron-to-hole energy transfer, the hypothesis behind the Auger cooling mechanism proposed in quantum dots, which is found to occur on a 1 ± 0.15 ps time scale. This is only marginally slower than the timescale of intraband relaxation of electrons in single crystal CdSe. In bulk CdSe, sequential multi-phonon emission allows for cooling rates of (0.4 ps)<sup>-1</sup> at room temperature." @default.
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- W2004141325 date "2008-02-07" @default.
- W2004141325 modified "2023-09-23" @default.
- W2004141325 title "Ultrafast intraband relaxation in colloidal quantum dots" @default.
- W2004141325 doi "https://doi.org/10.1117/12.761665" @default.
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