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The preparation of sizeable quantities of luminescent Si nanoparticles (Si-np) with controlled morphology is a challenging task. Here, we describe two strategies aiming at size reduction of the Si-np produced in a laser-assisted silane pyrolysis reactor without detrimental effects on the process yield and on the nanoparticle structural and compositional properties. The first method is based on the...
The ZnO nanotretapods prepared by a catalyst-free thermal oxidation between zinc vapor and oxygen were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and photoluminescence spectroscopy (PL). To improve the gas-mixing in the reactor, nitrogen gas was supplied in pulse into the reaction zone. This method could affect the oxygen vacancy...
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