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Luminescence spectra of onionlike (core)shell/shell heteronanocrystals hybridized on a blue light emitting diode driven at different levels of current injection at room temperature, along with a schematic structure of the heteronanocrystals and a picture of the resulting hybrid NC-WLED while generating white light.
(in blue) and (in red) show the probability distribution of electron and holes in the (core)shell/shell heteronanocrystals, respectively, while (in green) indicates the relative spatial localization of excitons, with respect to the potential profile (in black): (a) for the ground states and (b) for the first excited states .
In-solution photoluminescence and absorption spectra of onionlike (core)shell/shell heteronanocrystals.
Material parameters of CdSe and ZnS.
Electron and hole wave function overlaps , their overlap squares , the exciton binding energy due to their Coulomb interaction, and the resulting optical transition energies for the ground states and for the first excited states .
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