Size effects and breakdown of the power-law blinking statistics of CdSe nanorods.
In this study, the dependence of sample size and light intensity on the fluorescence intermittency of semiconductor nanorods is investigated. We present a model with diffusion-controlled electron-transfer reactions involving anomalous diffusion in energy configuration space. This model leads to a general formula t(-m) exp[-(Gammat)n] for the temporal behavior of blinking statistics, where m and n are related to the time dependence of the spectral diffusion. We reanalyze the experimental data of the long-time bending tail of CdSe nanorods and elucidate the size effects of the bending rates and activation energy.
Tang
Jau
J
Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan. jautang@gate.sinica.edu.tw
D000465:Algorithms; D019187:Cadmium Compounds / Q000737:chemistry*; D004058:Diffusion; D008956:Models, Chemical; D043942:Nanotubes / Q000737:chemistry*; D010316:Particle Size; D018036:Selenium Compounds / Q000737:chemistry*; D012666:Semiconductors
D019187:Cadmium Compounds; D018036:Selenium Compounds; C058667:cadmium selenide