Physics – Optics
Scientific paper
2007-04-28
Nano Letters 5, 11 (25/10/2005) 2160
Physics
Optics
Scientific paper
10.1021/nl051805d
Photothermal heterodyne detection is used to record the first room-temperature absorption spectra of single CdSe/ZnS semiconductor nanocrystals. These spectra are recorded in the high cw excitation regime, and the observed bands are assigned to transitions involving biexciton and trion states. Comparison with the single nanocrystals photoluminescence spectra leads to the measurement of spectral Stokes shifts free from ensemble averaging.
Berciaud Stéphane
Cognet Laurent
Lounis Brahim
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