Controlling blinking in multilayered quantum dots

Ruimin Wang; Yanpeng Zhang; Chenli Gan; Muhammad, Javed; Min Xiao
April 2010
Applied Physics Letters;4/12/2010, Vol. 96 Issue 15, p151107
Academic Journal
The fluorescence intermittency of multilayered quantum dots (QDs) is experimentally investigated. The measured blinking statistical probabilities for QDs of different shell structures and at different excitation powers are compared with the diffusion controlled electron transfer model. The results show that the power law statistics for the “on” and “off” events depend strongly on the structure and thicknesses of the shells. Strongly suppressed blinking behavior is observed in the CdSe/CdS/ZnCdS/ZnS QDs.


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