Reproducible mechanical-to-optical energy conversion in Mn (II) doped sphalerite ZnS

Mn-doped ZnS nanoparticles as efficient low-voltage cathodoluminescent phosphors

We have synthesized nanoparticles of ZnS doped with Mn for potential use as cathodoluminescent phosphors in field-emission displays ~FEDs!. We show that the cathodoluminescent efficiency of particles <100 nm in diameter is within 40% of that of a commercial ~micron-sized! phosphor when the electron-beam energy ranges between 500 and 3500 eV. The nanoparticles exhibit less current saturation tha...

Optical and Magnetic Properties of Mn-Incorporated ZnS Nanorods

Water-based route to colloidal Mn-doped ZnSe and core/shell ZnSe/ZnS quantum dots.

Relatively monodisperse and highly luminescent Mn(2+)-doped zinc blende ZnSe nanocrystals were synthesized in aqueous solution at 100 °C using the nucleation-doping strategy. The effects of the experimental conditions and of the ligand on the synthesis of nanocrystals were investigated systematically. It was found that there were significant effects of molar ratio of precursors and heating time...

Optical down-conversion in doped ZnSe:Tb3+ nanocrystals.

Rare earth (RE) Tb(3+)-doped high quality ZnSe nanocrystals (NCs) were synthesized by a facile chemical hot-injection method. ZnSe:Tb(3+) nanocrystals exhibited broadband absorption below the first excitonic absorption peak. Photoluminescence spectra showed Tb(3+) emission lines in the visible spectral window at room temperature when excited by UV radiation below the band-edge of the host ZnSe ...

A Biological Production of ZnS (Sphalerite) Nanoparticles with Desulfovibrio gigas

Sulfur-/sulfate-reducing bacteria (SRB) have been used for remediation of metalcontaminated ground water and soil through the precipitation of metal sulfides. These metal sulfides range from 3 nm to 3 μm in diameter. Of specific interest to this research are zinc sulfide nanoparticles (ZnS NPs) produced by SRBs with a diameter of ~3 nm. These ZnS NPs can be used as catalysts to grow nano-wires,...