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Pure and Y3+-doped SnSe films were fabricated by chemical bath deposition. The deposited films were characterized by x-ray diffraction, scanning electron microscopy, x-ray photoelectron spectroscopy, ultraviolet–visible spectrophotometry, photoluminescence spectrophotometry, and electrical conduction measurement. Since the films were deposited from the precursor solution with Se/Sn < 1, the Se/Sn...
The p-Bi2S3:Sn2+ and n-Bi2S3:Sn4+ films and their heterojunction films with uniform and dense microstructures were deposited on indium tin oxide (ITO) glass substrate by a chemical bath deposition. The n-Bi2S3:Sn4+ and p-Bi2S3:Sn2+ films had average particle sizes of ~5–25 nm and ~1–4 nm, and optical band gaps of ~1.36–1.59 eV and ~1.61–1.80 eV, respectively. The short-circuit current density, open-circuit...
Phase competition and stability of several typical high-entropy alloys (HEAs) were studied, and the effects of alloying additions and processing conditions on phase formation in these alloys were discussed. Alloying with chemically incompatible elements having a large difference in either the atomic size or enthalpy of mixing with constituting components in HEAs, e.g., Cu and Al in the FeCoNiCr alloy...
(Al,Sn)-codoped ZnO powders with a constant molar ratio of Zn: Al (99:1) and various molar ratios of Sn/Al (0–0.02) were synthesized by a sol–gel process and characterized by x-ray diffraction, field emission scanning electron microscopy, and ultraviolet (UV)-vis and luminescent spectrophotometries. The experiments indicated that the powders have random orientation and decreased particle size with...
Al-substituted M-type hexaferrite is a highly anisotropic ferromagnetic material. In the present study, we report the synthesis and the characterization of BaAl4Fe8O19 powder from two microemulsion systems of po1yoxyethylene octylphenol ether/1, 2-propylene glycol, or ethanol/cyclohexane/water and cetrimonium bromide/1, 2-propylene glycol/cyclohexane/water. Two microemulsion systems were found to...
Hydrogen gas as a clean energy resource was found to be largely bubbled from the H2O/H2O2/MnMoO4 system. The MnMoO4 powder was synthesized by a sol-gel method and was characterized with x-ray diffraction, transmission electron microscopy, and x-ray photoelectron spectrometry. The efficiency of the hydrogen generation increases with increasing H2O2 proportion, amount of MnMoO4 powder, and intensity...
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