Photo-oxidation-enhanced coupling in densely packed CdSe quantum-dot films

Wang, Xiaoyong; Zhang, Jiayu; Nazzal, Amjad; Xiao, Min
July 2003
Applied Physics Letters;7/7/2003, Vol. 83 Issue 1, p162
Academic Journal
Photo-oxidation of densely packed monolayer of CdSe quantum dots (QDs) was studied by time-resolved photoluminescence (PL) spectroscopy. Electrons yielded in QDs by the strong laser-pulse irradiation can assist the oxidation of CdSe QDs. Such rapid photo-oxidation does not introduce more nonradiative defects, instead, it enhances the coupling between QDs through surface modification and the PL intensity can be significantly improved.


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