Square-Facet Nanobar MOF-Derived CoO@Co/N-doped CNT Core-Shell-based Nanocomposites as Cathode Materials for High-Performance Supercapacitor Studies.

The binary as well as ternary nanocomposites of the square-facet nanobar Co-MOF-derived CoO@Co/N-CNTs (N-CNTs: nitrogen-doped carbon nanotubes) with Ag NPs and rGO have been synthesized via an easy wet chemical route, and their supercapacitor behavior was then studied. At a controlled pH of the precursor solution, square-facet nanobars of Co-MOF were first synthesized by the solvothermal method and then pyrolyzed under a controlled nitrogen atmosphere to get a core-shell system of CoO@Co/N-CNTs. In the second step, different compositions of CoO@Co/N-CNT core-shell structures were formed by an method with Ag NPs and rGO moieties.

Influence of Tin Doped TiO Nanorods on Dye Sensitized Solar Cells.

The one-step hydrothermal method was used to synthesize Sn-doped TiO (Sn-TiO) thin films, in which the variation in Sn content ranged from 0 to 7-wt % and, further, its influence on the performance of a dye-sensitized solar cell (DSSC) photoanode was studied. The deposited samples were analyzed by X-ray diffraction (XRD) and Raman spectroscopy, which confirmed the existence of the rutile phase of the synthesized samples with crystallite size ranges in between 20.1 to 22.

Aqueous-Solution-Processed CuZnSn(S,Se) Thin-Film Solar Cells via an Improved Successive Ion-Layer-Adsorption-Reaction Sequence.

A facile improved successive ionic-layer adsorption and reaction (SILAR) sequence is described for the fabrication of CuZnSn(S,Se) (CZTSSe) thin-film solar cells (TFSCs) via the selenization of a precursor film. The precursor films were fabricated using a modified SILAR sequence to overcome compositional inhomogeneity due to different adsorptivities of the cations (Cu, Sn, and Zn) in a single cationic bath. Rapid thermal annealing of the precursor films under S and Se vapor atmospheres led to the formation of carbon-free CuZnSnS (CZTS) and CZTSSe absorber layers, respectively, with single large-grained layers.

Superior selectivity and enhanced response characteristics of palladium sensitized vanadium pentoxide nanorods for detection of nitrogen dioxide gas.

Vanadium pentoxide (VO) nanorods have been deposited onto the glass substrates by spraying 75ml of 30mM vanadium trichloride (VCl) solution at optimized substrate temperature of 400°C. The XRD study confirms the formation of orthorhombic crystal structure of VO nanorods. The FE-SEM micrograph shows the nanorods-like morphology of VO.

Template-free TiO photoanodes for dye-sensitized solar cell via modified chemical route.

Surfactant and template-free Titanium dioxide (TiO) spheres have been deposited via ultrasonic rinsing assisted modified successive ionic layer adsorption and reaction (M-SILAR) method. The effect of M-SILAR cycle variation on the growth of TiO films and power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs) has been reported. Also, the significant influence of the dye adsorption time of photoelectrodes on the overall PCE of TiO based DSSCs has been investigated systematically.