Abstract
In the quantum confinement regime, the time-resolved photoluminescence mapping of CdSe nanocrystals reveals unusual size-dependent characteristics in solute or solid-state environments. The former case typifies long-lived intradot exciton recombinations, while in the latter energy-dependent Kohlrausch relaxations quench luminescence via interdot energy transfer. The observed energy transfer rate increases for larger size (1.5× 108 s -1 for d=2.5 nm and 6.4× 108 s-1 for d=10 nm).
Original language | English (US) |
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Article number | 153111 |
Journal | Applied Physics Letters |
Volume | 97 |
Issue number | 15 |
DOIs | |
State | Published - Oct 11 2010 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)