Photobleaching of quantum dots by non-resonant light

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...

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Published inPCCP. Physical chemistry chemical physics (Print) Vol. 15; no. 9; pp. 3130 - 3132
Main Authors XINGBO SHI, YANG TU, XIAOJUN LIU, YEUNG, Edward S, HONGWEI GAI
Format Conference Proceeding Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 07.03.2013
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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.
AbstractList 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.
Author HONGWEI GAI
YANG TU
XINGBO SHI
XIAOJUN LIU
YEUNG, Edward S
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Issue 9
Keywords Conduction
Quantum dot
Energy
Photon
Wavelength
Photobleaching
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Snippet Core-shell quantum dots suffer from photobleaching by light at wavelengths longer than their emission wavelengths. That is, QD photobleaching can be triggered...
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StartPage 3130
SubjectTerms Chemistry
Conduction band
Decay
Emission
Exact sciences and technology
General and physical chemistry
Light
Models, Chemical
Photobleaching
Photochemistry
Photons
Physical chemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Pumps
Quantum Dots
Wavelengths
Title Photobleaching of quantum dots by non-resonant light
URI https://www.ncbi.nlm.nih.gov/pubmed/23344014
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