The solvothermal reaction in supercritical ethanol produces nanosize Zn2SiO4:Mn2+ from the precursor sol derived from the mixture of zinc acetate, manganese acetate and TEOS. Spherical primary particles of 10–20 nm were grown to the rod-like particles of 10–30 nm diameter and 200–350 nm length by increasing the aging temperature from 200 to 265°C and by optimizing the water/ethanol ratio of sol. This crystal growth improved the intensity of green emission due to the d-d transition of Mn2+ through energy transfer from Zn2SiO4. We discuss the process of Zn2SiO4:Mn2+ crystal growth during the solvothermal reaction in supercritical ethanol.

Low-temperature synthesis of nanosize Zn_2SiO_4:Mn^ phosphor from the precursor sol in supercritical ethanol and its photoluminescent properties

Diodo planar orgânico schottky: construção e caracterização

/pdf/universidade-estadual-paulista-instituto-de-geociencias-e-4i369yjsx8.pdf

UNIVERSIDADE ESTADUAL PAULISTA Instituto de Geociências e Ciências Exatas Campus de Rio Claro

/pdf/universidade-estadual-paulista-instituto-de-geociencias-e-3yoiexfgi1.pdf

UNIVERSIDADE ESTADUAL PAULISTA Instituto de Geociências e Ciências Exatas Câmpus de Rio Claro

Estudo das propriedades elétro-óptica de dispositivos eletroluminescentes confeccionados com um compósito híbrido

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Estudo das propriedades elétro-óptica de dispositivos eletroluminescentes confeccionados com um compósito híbrido