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Ag-Cu nanoalloy has been synthesized directly in solution. The composition, morphology and structure of the Ag-Cu nanoalloys were characterized by XRD, TEM, EDS and SEM. The morphology of Ag-Cu nanoalloys appears small, uniform, and spherical. The size distribution mainly focuses on 80nm~90nm. An average composition is Ag48.9Cu51.1, which is within experimental error of the nominal 1:1 stoichiometry...
The lead selenide (PbSe) nanoparticles have been synthesized under ultrasonic/microwave co-irradiation. These PbSe nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and DSC. In the new routes, pure PbSe phase was synthesized using elemental Se and lead acetate as starting materials and ethylene glycol as solvent under ultrasound of 25 kHz, 1500 W and...
CdTe/Cd1-xMnxS core-shell structure nanoparticles were successfully synthesized in aqueous solution assisted by microwave irradiation. The photoluminescence spectra showed that incorporating low level Mn2+ in outer inorganic shell will not quench the photoemission of quantum dots. The doped nanocrystals exhibited high photoluminescence quantum yield (PLQY), reaching 52% in water under optimum condition.
CuSe and InSe nanoparticles were synthesized using organic solution pyrolysis route. The size and shape of nanoparticles depend on synthesis conditions such as reaction time and injecting reagent order. We achieved the synthesis of InSe nanowires with 5 nm width, 10 um length, hexagonal plate with 100 nm side and CuSe spherical nanoparticles with 20-50 nm diameter. Polycrystalline CuInSe2 film were...
A simple method to synthesize Gallium Nitride (GaN) powder using gallium trichloride (GaCl3) and ethylene diamine tetra acetic acid (EDTA) as starting materials has been discussed in this article. GaN nanocrystals were synthesized by nitradation of Gallium-EDTA complex at different temperatures of 600??C, 700??C, 800??C and 900??C in ammonia (NH3) atmosphere. X-ray diffraction analysis revealed the...
Reaction pathway investigations of the solvothermal preparation of nanocrystalline CuIn1−xGaxSe2 in triethylenetetramine reveal the early formation of a previously unreported Cu2−xSe(s) intermediate. Over 24 hours, this reacts with In and Se species to form CuInSe2(s). If Ga is present, the reaction proceeds over an additional 48 hours to form CuIn1−xGaxSe2. Adding ammonium halide salts reduces the...
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