Longo E. – TechConnect Briefs

Preparation of ZnO Nanowires for Solar Cells Aplicattion

Fernandes S.L., Zaghete M.A., Graeff C.F.O., Varella J.A., Longo E., UNESP, Universidade Estadual Paulista, BR

So far, the most successful solar cells have been produced using porous nanoparticles combined with TiO2 films. However, ZnO has emerged as a promising alternative to replace TiO2, with marked improvements in performance of the [...]

Preparation of ZnO Nanowires for Solar Cells Aplicattion

Fernandes S.L., Zaghete M.A., Graeff C.F.O., Varella J.A., Longo E., UNESP, Universidade Estadual Paulista, BR

So far, the most successful solar cells have been produced using porous nanoparticles combined with TiO2 films. However, ZnO has emerged as a promising alternative to replace TiO2, with marked improvements in performance of the [...]

Funcional lead-free composite

Teixeira G.F., de Oliveira J.A.M., Zaghete M.A., Longo E., Varela J.A., Chemistry Institute, UNESP- Araraquara, BR

In the work reported here was obtained a lead-free NaNbO3 / PVDF composite, starting from photoluminescent ceramics particles with 1D morphology obtained by microwave-assisted hydrothermal method. Photoluminescence spectrum of the NaNbO3 particles shown emission around [...]

CdMoO4 synthesized by a microwave-assisted hydrothermal method and their photoluminescence and photocatality properties

de Moura A.P., Oliveira L.H., Xavier C.S., Rosa I.L.V., Li M.S., Longo E., Varela J.A., Universidade Estadual Paulista, BR

Metal molybdates had a high application potential in various fields such as photoluminescence, microwave applications, optical fibers, scintillator materials, humidity sensors, and catalysis. In this work CdMoO4 nanoparticles were obtained under hydrothermal conditions using microwave [...]

Microwave-assisted hydrothermal synthesis of ZnO powders with different reagents

Xavier C.S., de Moura A.P., Li M.S., Longo E., Varela J.A., Cava S., Universidade Federal de Pelotas, BR

Zinc oxide (ZnO) is an exceptionally important semiconductor with a direct wide band gap (3.37 eV) and large excitation binding energy (60 meV) at room temperature [1]. In this work, zinc oxide powders were synthesized [...]

Structural refinement and photoluminescence properties of cube-like (Ca1-xCux)TiO3 crystals synthesized by the microwave-hydrothermal method

Oliveira L.H., de Moura A.P., Cavalcante L.S., Gutierrez S.A., Longo E., Varela J.A., Universidade Federal de São Carlos, BR

In this work, (Ca1-xCux)TiO3 crystals with (x = 0, 0.01 and 0.02), were synthesized by the microwave-hydrothermal method at 140ºC for 32 min. The photo-physical properties were studied to analyze the influence of Cu2+ doping [...]