Abstract We report here the structural, optical, photoluminescence (PL), and magnetic investigation of Zn 1−x−y Fe x M y O nanoparticles. The lattice constants crystallite size are decreased by Fe, followed a further decrease up to (Fe + M) = 0.30. A compressive stress is approved particle between 180 277 nm follows sample order ZnO, Cu), Ni), Fe. Although single value energy gap (E g ) found f...

Ultrasound and nanoparticles are used to control the supercooling degree of erythritol-based phase change material. The effects particle type, ultrasonic power initial temperature on crystallization (SD), progress instability nanofluids investigated. Meanwhile, preparation scheme that satisfy both high-quality thermal performance economic value is explored. results show when concentrations 0.05...

We report on recent enhancements to device performance leading to a certified total-area energy conversion efficiency of 18.6% for Cu(In,Ga)Se2 solar cells that incorporate a ZnS(O,OH) buffer layer as an alternative to CdS. Along with information on device fabrication and layer properties, we provide a comparative device analysis between this type of solar cell and the slightly more efficient Z...

P-type delafossite CuGaO2 is a wide-bandgap semiconductor for optoelectronic applications, and its lattice parameters are very similar to those of n-type wurtzite ZnO. Accordingly, the investigation crystalline heterostructures ZnO has attracted significant attention. In this study, interfacial CuGaO2/ZnO hetero-compounds were examined through X-ray diffraction (XRD) analysis, confocal micro-Ra...

Nanosized zinc oxide (ZnO) particles modified with different silane coupling agents (octyltriethoxysilane (OTES), octadecyltriethoxysilane (ODTES) and (3-glycidyloxypropyl)trimethoxysilane (GPTMS)) were synthesized in basic catalysis using the sol-gel method. The structure morphology characterized by dynamic light scattering (DLS), environmental scanning electron microscopy (ESEM) Fourier trans...

The lattice location of copper in single-crystalline zinc oxide was studied by means of the emission channeling technique. Following 60-keV room-temperature implantation at a fluence of 2.3310 cm, the angular distribution of b particles emitted by the radioactive isotope Cu was measured by a position-sensitive detector. The b emission patterns give direct evidence that in the as-implanted state...

A non-optimized interface band alignment in a heterojunction-based solar cell can have negative effects on the current and voltage characteristics of the resulting device. To evaluate the use of Near Edge X-ray Absorption Fine Structure spectroscopy (NEXAFS) as a means to measure the conduction band position, Cu(In,Ga)S2 chalcopyrite thin film surfaces were investigated as these form the absorb...