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Phys Chem Chem Phys. 2013 Mar 7;15(9):3130-2. doi: 10.1039/c3cp43668c. Epub 2013 Jan 24.

Photobleaching of quantum dots by non-resonant light.

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1
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China.

Abstract

Core-shell quantum dots suffer from photobleaching by light at wavelengths longer than their emission wavelengths. That is, QD photobleaching can be triggered by photons with low energies that are insufficient to pump electrons into the conduction band. The most probable reason is that electrons are pumped into a surface state and then nonradiatively decayed as in conventional photobleaching.

PMID:
23344014
DOI:
10.1039/c3cp43668c
[Indexed for MEDLINE]
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