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- W1999614319 abstract "Spectrally resolved fluorescence imaging of single CdSe/ZnS quantum dots (QDs), charged by electrospray deposition under negative bias has revealed a surprising net blue shift (∼60 meV peak-to-peak) in the distribution of center frequencies in QD band-edge luminescence. Electrostatic force microscopy (EFM) on the electrospray QD samples showed a subpopulation of charged QDs with 4.7 ± 0.7 excess electrons, as well as a significant fraction of uncharged QDs as evidenced by the distinct cantilever response under bias. We show that the blue-shifted peak recombination energy can be understood as a first-order electronic perturbation that affects the band-edge electron- and hole-states differently. These studies provide new insight into the role of electronic perturbations of QD luminescence by excess charges." @default.
- W1999614319 created "2016-06-24" @default.
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- W1999614319 date "2011-09-15" @default.
- W1999614319 modified "2023-09-26" @default.
- W1999614319 title "Spectral Properties of Multiply Charged Semiconductor Quantum Dots" @default.
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- W1999614319 doi "https://doi.org/10.1021/nl2026103" @default.
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