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High-Efficiency “Green” Quantum Dot Solar Cells
(American Chemical Society, 2014)
Semiconductor quantum dots (QDs) are extremely interesting materials for the development of photovoltaic devices, but currently the present the drawback is that the most efficient devices have been prepared with toxic heavy ...
Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar Cells
(American Chemical Society, 2014-06)
Organic-inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time. We have found a giant ...
Relaxation of Electron Carriers in the Density of States of Nanocrystalline TiO2
(American Chemical Society, 2014-01)
Band gap localized states and surface states play a dominant role in the application of nanocrystalline metal oxides to photovoltaics and solar fuel production. Electrons injected in nanocrystalline TiO2 by voltage or ...
Panchromatic Solar-to-H2 Conversion by a Hybrid Quantum Dots-Dye Dual Absorber Tandem Device
(American Chemical Society, 2014-01)
Solution-processed mesoscopic oxide semiconductor-based materials offer potentially low-cost and high stability alternative for next generation of water to hydrogen conversion photoelectrochemical cells (PEC). In the present ...
Entropic restrictions control the electric conductance of superprotonic ionic solids
(Royal Society of Chemistry, 2020)
The crystallographic structure of solid electrolytes and other materials determines the protonic
conductivity in devices such as fuel cells, ionic-conductors, and supercapacitors. Experiments show that
a rise of the ...
Probing Lithiation Kinetics of Carbon-Coated ZnFe2O4 Nanoparticle Battery Anodes
(American Chemical Society, 2014-03)
The investigation of the lithiation-delithiation kinetics of anodes comprising carbon-coated ZnFe2O4 nanoparticles is reported in here. The study confirmed that, as occurring with other conversion electrodes, lithiation ...
Slow dynamic processes in lead halide perovskite solar cells. Characteristic times and hysteresis
(American Chemical Society, 2014-06)
Characteristic times of perovskite solar cells (PSCs) have been measured by different techniques: transient photovoltage decay, transient photoluminescence, and impedance spectroscopy. A slow dynamic process is detected ...
Theory of Impedance and Capacitance Spectroscopy of Solar Cells with Dielectric Relaxation, Drift-Diffusion Transport, and Recombination
(American Chemical Society, 2014-07)
Semiconductor photovoltaic devices currently investigated, such as hybrid organic–inorganic lead halide perovskite based solar cells, have shown a high dielectric polarization combined with ambipolar carrier transport. In ...
Energy Diagram of Semiconductor/Electrolyte Junctions
(American Chemical Society, 2013-12)
In electrochemistry and photoelectrochemistry, it is most common to refer the voltage to a reference electrode (RE) or in a two-electrode cell with respect to a counterelectrode (CE).(1, 2) However, in a semiconductor film ...
Light-modulated TiOx Interlayer Dipole and Contact Activation in Organic Solar Cell Cathodes
(Wiley, 2014-10-22)
Understanding working mechanisms of selective interfacial layers and the underlying energetics of the organic semiconductor/electrode interface is an issue of primary concern for improving organic solar cell technologies. ...