نتایج جستجو برای: spray pyrolysis
تعداد نتایج: 30375 فیلتر نتایج به سال:
اکسیدهای آهن ترکیبی شیمیایی از آهن و اکسیژن می باشند. بطور کلی 16 نوع ترکیب شناخته شده از اکسیدها و هیدروکسیدهای آن وجود دارد. در میان این اکسیدها، آهن 3 اکسید(fe2o3) بسیار مورد توجه است. این اکسید خود از چهار فاز متفاوت آلفا، بتا، گاما و اپسیلون با ویژگیهای منحصر به فرد تشکیل شده است. فاز گامای این اکسید (?- fe2o3)، مگهمایت نام دارد که ساختاری کریستالی و ایزومتریک داشته و فری مغناطیس است. این ...
MoO3 thin films have been prepared by a simple spray pyrolysis technique at substrate temperature 250C. The structure and morphology of thin films are characterized by X-ray powder diffraction (XRD), scanning electron microscopy and UV-vis spectroscopy. The gas sensing properties of MoO3 thin film is studied at gas concentration 400 ppm and working temperature of 100–400 C. It was found that th...
The grain coarsening in dense nanocrystalline gadolinia-doped ceria (CGO) and CeO2 was studied for the grain size regime from 10 to 250 nm. Dense ceria-based thin films were prepared by spray pyrolysis and pulsed laser deposition on sapphire substrates. The small grain-sized CGO and CeO2 microstructures were surprisingly stable and showed self-limited grain growth and relaxation of the microstr...
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This work presents a novel white light device. An yttrium aluminum garnet (YAG) phosphor-incorporated zinc oxide (ZnO) film is deposited on a slide glass substrate by ultrasonic spray pyrolysis. A nanoflower consisting of a hexagonal nanopetal is formed on the surfaces of the samples, and the sizes of the nanopetal are approximately 200 to 700 nm. Additionally, the nanopetal becomes blunted wit...
In this research work, for the first time, stable high-performance inverted polymer solar cells (iPSCs) have been fabricated utilizing facile and low-cost intermittent spray pyrolysis (SP) techniqu...
SiO₂-CaO-P₂O₅-based mesoporous bioactive glasses (MBGs) were synthesized by spray pyrolysis in this study. Three commonly used non-ionic tri-block copolymers (L121, P123, and F127) with various lengths of hydrophilic chains were applied as structural templates to achieve different pore sizes. A mesoporous structure was observed in each as-prepared specimen, and the results showed that the L121-...
The lithium-doped nickel oxide (L-NiO) films were synthetized using the modified spray pyrolysis method with a two-step grown process. By observing the spectra of X-ray photoemission spectroscopy of L-NiO films, the intensity of Ni 2p3/2 peak of Ni3+ bonding state increases with increasing Li concentration that causes the decrease of transparency and resistivity. The L-NiO films with optimum ch...
An ultrahigh photosensitive diode was developed using a Cu-doped CeO 2 thin film through spray pyrolysis processing, which has made unique contribution in the field of optoelectronic device fabrication process.
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