Push–pull triarylamine additives that enhance dye sensitized solar cell performance
Enhancement in dye sensitized solar cell performance using push–pull organic triarylamines with tunable frontier energy levels as electrolyte additives is presented.
Materials Literature
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Oscillatory Longwave Marangoni Convection in a Binary Liquid: Rhombic Patterns
Longwave oscillatory Marangoni convection in a planar binary liquid layer is studied. Finite-amplitude regimes with perturbations of temperature and solute concentration of order unity are considered. Both thermocapillary and solutocapillary effects are taken into account. One- and two-dimensional patterns on a rhombi…
Modeling the impact of uncertainty in detector specification on efficiency values of a HPGe detector using ANGLE software
The objective of this study is to model the impact of uncertainties in the engineering specifications of a typical p-type HPGe detector on the efficiency values when the measured soil sample is in contact geometry with the detector. We introduce a parameter named the normalized sensitivity impact which allows a compar…
Dechlorination of polychlorinated biphenyls in transformer oil using UV and visible light
A study on dechlorination of PCB138 in transformer oil (TO) and 2-propanol (IPA) using 254 nm ultraviolet (UV) light as well as dye sensitized visible light has been conducted. Studies on dechlorination of polychlorinated biphenyls (PCBs) in TO using visible light in the presence of methylene blue (MB) and triethylami…
The geometry and topology of soft materials
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Structural investigation of epitaxial 2H-SiC–α-Al2O3 1-D heterostructures
2H-SiC–α-Al2O3 epitaxial heterostructures in a 1-D nanosystem were achieved via a simple CVD (chemical vapor deposition) process. Detailed structural characterizations and elemental analyses were carried out using methods such as elemental mapping, EELS (electron energy loss spectroscopy), XPS (X-ray photoelectron spe…
Effect of crib dimensions on burning rate
The burning rate of unconfined cribs has long been identified to occur in two regimes: the densely-packed regime where the burning rate is proportional to the crib porosity and the loosely-packed regime where the burning rate is independent of porosity. Though the cribs used to define these burning regimes were primar…
The construction of two lanthanide coordination polymers based on 5-hydroxyisophthalate and bipyridine
Two lanthanide coordination polymers, [Tm2·(5-IPA)4·(2,2′-Hbipy)2]·3H2O (1, 5-H2IPA = 5-hydroxyisophthalic acid, 2,2′-bipy = 2,2′-bipyridine) and [Er·(5-HIPA)3·(4,4′-bipy)3·(H2O)2]·3H2O (2, 4,4′-bipy = 4,4′-bipyridine), have formed by hydrothermal synthesis. Complex 1 exhibits a 2-D coordination network containing par…
UV light induced photodegradation of organic dye by ZnO nanocatalysts
Ultraviolet light induced photocatalytic activity of ZnO nanocatalyst prepared using a wet chemical precipitation route and mineralization of the methyl orange (MO) dye has been carried out in a photocatalytic reactor. The degradation of the MO was monitored spectrophotometrically and showed a decolorization efficienc…
The Influence of BaCeO3 Addition on Y-211 Particle Size of YBCO Bulk Superconductors
The influence of BaCeO3 addition (1.79 wt%) on a Y2BaCuO5 (Y-211) particle size and particle distribution in melt-processed YBa2Cu3O7/Y2BaCuO5 (Y-123/Y-211) bulk superconductors was investigated. The BaCeO3 powder was prepared by conventional solid state synthesis from BaO2 and CeO2. For the particle refinement, prepa…
Effect of Two Liquid Phases on the Separation Efficiency of Distillation Columns
Distillation is one of the oldest and most important separation processes used in the chemical and petrochemical industries. On the other hand, it is a process the thermodynamic efficiency of which is very low, and therefore reducing the consumption of energy is one of the targets of research studies on distillation.…
Application of microstructured intermetallides in turbine manufacture. Part 2: Problems in development of heat-resistant alloys based on TiAl (a review)
The problems of formation of the necessary microstructure of intermetallic materials providing the required mechanical properties under extreme operating conditions are considered by the example of doped TiAl intermetallides. The problem of corrosion stability of intermetallides under extreme operating conditions is e…
Bactericidal Activity of TiO2on Cells ofPseudomonas aeruginosaATCC 27853
The photocatalytic activity of semiconductors is increasingly being used to disinfect water, air, soils, and surfaces. Titanium dioxide (TiO2) is widely used as a photocatalyst in thin films, powder, and in mixtures with other semiconductors or metals. This work presents the antibacterial effects of TiO2and light expo…
Growth and spontaneous differentiation of umbilical-cord stromal stem cells on activated carbon cloth
We have investigated the capacity of activated carbon cloth to support the growth and differentiation of human mesenchymal umbilical-cord stromal stem cells. Our results demonstrate that this scaffold provides suitable conditions for the development of cell-derived matrix proteins and facilitates the growth of undiffe…
A 3-D coordination network constructed from an angular bis-oxamato tecton and calcium ions
The homometallic 3-D coordination intercatenated polymer, [Ca(H2L)(H2O)]·2H2O, has been obtained by assembling a dianionic ligand H2L2− = 4,4′-sulfonylbis(phenyl)bis(oxamate) with calcium(II) ions. We also describe the crystalline structure of the proligand, H4L, and the structure of its diethylester precursor, H2Et2L…
Sensitization of ZnO nanowire arrays with CuInS2 for extremely thin absorber solar cells
We report on the photosensitization of electrodeposited ZnO nanowire arrays with CuInS2 (CIS) extremely thin layers prepared by two methods: successive ionic layer adsorption and reaction (SILAR) and electrochemical deposition (ECD). This is the first time that such core (ZnO)/shell (CIS) nanostructures are realized.…
Crosstalk-free integral imaging display based on double plano-convex micro-lens array
A crosstalk-free integral imaging display consisting of a display panel and double plano-convex micro-lens array is proposed. The double plano-convex micro-lens array includes two micro-lens arrays, A and B. Micro-lens array A is used to eliminate crosstalk by completely reflecting crosstalk lights. Micro-lens array B…
Transport‐based equivalent circuit for semiconductor nanoparticle in terahertz frequency range
By consideration of the physical process of charge carrier motion and lattice polarisation, an equivalent circuit for a semiconductor nano‐particle in the terahertz frequency range is obtained. All circuit elements are of electrical nature and can be directly expressed in terms of material parameters. When the general…
Nanocompósitos de matriz epoxídica com reforços produzidos a partir do grafite natural
O grafite é a fonte mais abundante e de baixo custo para obtenção de grafeno. Para sua produção e aplicação em nanocompósitos em escala industrial, o método de redução do óxido de grafite (OG) tem sido o mais utilizado. A oxidação do grafite promove a introdução de grupos funcionais na sua estrutura lamelar que causam…
Hydroxyl- and chloro-bridges as “structural assistants” in the construction of two new Keggin-based 3D frameworks
Two new Keggin-based three dimensional (3D) frameworks, [CuI4(btb)2(μ-OH)(PW12O40)] (1) and [CuII2(btb)4(μ-Cl)(PW12O40)]·3H2O (2) (btb = 1,4-bis(1,2,4-triazol-1-y1)butane), were synthesized and structurally characterized. In compound 1, the metal–organic subunit is a wave-like 2D layer consisting of ellipse-shaped tet…