Photothermal Absorption Spectroscopy of Individual Semiconductor Nanocrystals
Language
en
Article de revue
This item was published in
Nano Letters. 2005-10-25, vol. 5, n° 11, p. 2160
American Chemical Society
English Abstract
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 ...Read more >
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.Read less <
English Keywords
CdSe/ZnS semiconductor nanocrystals
absorption spectroscopy
multiexcitons
single molecule detection
Origin
Hal imported