Results 191 to 200 of about 11,302 (210)

Cu2ZnSnS4 thin films deposition by ultrasonic spray pyrolysis

Journal of Alloys and Compounds, 2012
Abstract Cu 2 ZnSnS 4 (CZTS) thin films were deposited by ultrasonic spray pyrolysis technique. The substrate temperature was varied from 280 to 360 °C in order to investigate its influence on CZTS films properties. The deposition rate shows two activation energies 0.16 and 0.53 eV, respectively at low and high substrate temperatures. This indicates
W. Daranfed, M.S. Aida, N. Attaf, J. Bougdira, H. Rinnert   +4 more
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YAG:Ce phosphor particles prepared by ultrasonic spray pyrolysis

Materials Research Bulletin, 2000
Abstract Spray pyrolysis was applied to the preparation of fine YAG:Ce phosphor particles. The characteristics of particles such as crystallinity, morphology, and photoluminescence were investigated. Phase-pure YAG:Ce particles with high crystallinity were obtained after annealing at lower temperatures than those of conventional preparation processes.
Kang, YC, Lenggoro, IW, Park, SB Park, SeungBin, Okuyama, K   +3 more
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Nanostructured phosphorous tungsten bronzes from ultrasonic spray pyrolysis

Solid State Ionics, 2005
Abstract Ultrasonic spray pyrolysis has been used to obtain fine spherical powders of WPA bronzes from a 29-tungstenphosphoric acid (WPA-29) feed solution. The average grain size of the obtained powder particles is ca. 1000 nm; these consist of subparticles in the 30–80 nm range.
Jokanović, Vukoman R., Mioč, Ubavka B., Nedić, Zoran   +2 more
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Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine

Materials Chemistry and Physics, 2013
Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine.
Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Milošević, Olivera, Ahrenkiel, Scott P., Šaponjić, Zoran, Nedeljković, Jovan   +6 more
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Preparation of spherical Zr0.8Sn0.2TiO4 powder by ultrasonic spray pyrolysis

Journal of Materials Science, 1995
Fine, spherical Zr0.8Sn0.2Tio4 powders were prepared by spray pyrolysis, using an ultrasonic transducer, from an aqueous solution of metal chlorides. The synthesized powders had a spherical morphology and many shell fragments. The observed shell fragments were attributed to the impermeable surface crust formed during thermal decomposition of the ...
Seo-Yong Cho, Jong -Heun Lee, Soon Ja Park   +2 more
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LiFePO4/carbon cathode materials prepared by ultrasonic spray pyrolysis

Journal of Power Sources, 2006
Abstract Small crystallites LiFePO 4 powder with conducting carbon coating can be synthesized by ultrasonic spray pyrolysis. Cheaper trivalent iron ion is used as the precursor. The pure olivine phase can be prepared with the duplex process of spray pyrolysis (synthesized at 450, 550 or 650 °C) and subsequent heat-treatment (at 650 °C for 4 h).
Mu-Rong Yang, Tsung-Hsien Teng, She-Hung Wu   +2 more
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Tin oxide thin films deposited by ultrasonic spray pyrolysis

Ceramics International, 2008
This study investigated microstructure of SnO 2 thin films deposited by ultrasonic spray pyrolysis technique using 0.2 M of SnCl 4 ·5H 2 O in absolute ethanol as a precursor. The deposition temperature (350-450 °C) and time (20-90 min) were varied. The influence of film-deposition conditions on grain size and orientation were discussed.
D. Jadsadapattarakul, C. Euvananont, C. Thanachayanont, J. Nukeaw, T. Sooknoi   +4 more
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Thin films of ZnO:M synthesized by ultrasonic spray pyrolysis

Russian Journal of Inorganic Chemistry, 2011
High optical quality ZnO:M@Si nanocomposites (where M is the doping element) were obtained by ultrasonic spray pyrolysis. The variation of experimental conditions, the use of various precursors and dopants demonstrated that the morphology of zinc oxide nanoparticles is mainly determined by the sort of the doping element.
L. N. Demyanets, V. V. Kireev, L. E. Li, V. V. Artemov   +3 more
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Emission of ZnO:Ag nanorods obtained by ultrasonic spray pyrolysis

Physica B: Condensed Matter, 2014
Abstract Scanning electronic microscopy (SEM), X ray diffraction (XRD), photoluminescence (PL) and its temperature dependence have been studied in ZnO:Ag nanorods (NRs) prepared by the ultrasonic spray pyrolysis (USP) method. The time variation at the growth of ZnO:Ag films permits modifying the ZnO phase from the amorphous to crystalline, to change ...
E. Velázquez Lozada, T.V. Torchynska, J.L. Casas Espinola, B. Pérez Millan   +3 more
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Preparation of γ-Gd2S3 films by ultrasonic spray pyrolysis

Materials Chemistry and Physics, 2005
Abstract Nanophase γ-Gd2S3 polycrystalline thin films were deposited by a so-called asynchronous pulse ultrasonic spray pyrolysis method on glass substrates at relatively low temperature without any complexing agent. The films were characterized by X-ray diffraction, scanning electron microscopy and Raman spectrum. The technical conditions leading to
Wei Wang, Sheng-Yue Wang, Mei Liu
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