Direct observation of mixed-parity excited states in surface-passivated PbS nanocrystals
Photoluminescent emission is observed from surface-passivated PbS nanocrystals following the two-photon excitation of high-energy excitonic states. The emission appears directly at the excitation energy with no detectable Stokes-shift for a wide range of excitation energies. The observation of direc...
Autori principali: | Fernee, M, Watt, A, Warner, J, Heckenberg, N, Rubinsztein-Dunlop, H |
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Natura: | Journal article |
Lingua: | English |
Pubblicazione: |
2004
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