Enhanced ultraviolet emission from ZnS-coated ZnO nanowires fabricated by self-assembling method

Article Abstract:

A simple chemical route for ZnS-coated ZnO nanowires with preferential (002) orientation is described, where sodium sulfide and zinc nitrate are used to supply S and Zn atoms at 60 degree Celsius to form ZnS-coated ZnO nanowires structures. In the photoluminescence (PL) spectra an enhanced ultraviolet emission is observed for the ZnS-modified sample, and the visible emission is quenched after S and ZnS coating on ZnO.

Zinc Sulfate, Electric properties, Zinc oxide, Structure

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Emission intensity dependence and single-exponential behavior in single colloidal quantum dot fluorescence lifetimes

Article Abstract:

The single-exponential decay is a measurement of the radiative lifetime, thus, providing a quantitative measure of the single-exponential radiative lifetime of colloidal CdSe QDs at room temperature. These results highlight the important role that QY fluctuations play in determining the intensity trajectory from single QDs.

Science & research, Cadmium Compounds, Research, Analysis, Quantum theory, Quantum mechanics

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