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3. Semiconductor nanocrystals with 100% quantum efficiency
3.1 Reduced flicker – Increased quantum efficiency
We have already seen that non-radiative Auger recombination processes appear to play a decisive role in the poor quantum efficiency of nanocrystals. Recall that Auger recombination corresponds to the non-radiative transfer of energy from an exciton to an isolated charge carrier present in the nanocrystal.
To increase the quantum efficiency of nanocrystals, Auger recombinations must be made less likely. If these become a minority compared with radiative recombinations, the emission of a photon by exciton recombination will be more likely.
Two approaches have been studied with the aim of reducing the efficiency of Auger processes: composition gradient structures and thick-shell structures....
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Semiconductor nanocrystals with 100% quantum efficiency
Conclusion
Bibliography
Events
30 Years QDs – International conference celebrating 30 years of the discovery of colloidal QDs: May 26-28, 2014, ESPCI, Paris
( http://www.30-years-qds.com )
International Conference on Quantum Dots – International Conference on QDs, biannual
Directory
Laboratories – Design offices – Schools – Research centers (non-exhaustive list)
Laboratoire de physique et d'étude des matériaux (LPEM, UMR8213 CNRS/UPMC/ESPCI), 10, rue Vauquelin, 75005 Paris, France
Organic & Hybrid Molecular Electronics Laboratory...
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