Mostrando ítems 1-10 de 162
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Room temperature stable ClPrNTf2 ionic liquid utilizing for chemical sensor development
A stable ionic liquid was prepared at room-temperature using the metathesis reaction, which was consummated by the reaction of l-Phenylalanine ethyl ester hydrochloride (chlorpromazine hydrochloride) with lithium-bis(tri ...
Consolidation and Expansion of Perovskite Solar Cell Research
(American Chemical Society, 2016-03)
Hysteresis, band transport, polaron transport, balanced charge transport, diffusion length, vacancies, ion migration, defects, doping, traps, exciton binding energy, luminescence, hot carrier cooling, lasing, ampli fied ...
Toward High-Temperature Stability of PTB7-Based Bulk Heterojunction Solar Cells: Impact of Fullerene Size and Solvent Additive
The use of fullerene as acceptor limits the thermal stability of organic solar cells at high temperatures as their diffusion inside the donor leads to phase separation via Ostwald ripening. Here it is reported that ...
Origin of high open-circuit voltage in solid state dye-sensitized solar cells employing polymer electrolyte
Herein, the energy level alignment and electron recombination kinetics in solid state dye-sensitized solar cells (DSCs) employing a solid polymer electrolyte (SPE) have been quantitatively characterized. In order to determine ...
Investigating the Consistency of Models for Water Splitting Systems by Light and Voltage Modulated Techniques
(American Chemical Society, 2016-12)
The optimization of solar energy conversion devices relies on their accurate and nondestructive characterization. The small voltage perturbation techniques of impedance spectroscopy (IS) have proven to be very powerful to ...
Surface Recombination and Collection Efficiency in Perovskite Solar Cells from Impedance Analysis
(American Chemical Society, 2016-11)
The large diffusion lengths recurrently measured in perovskite single crystals and films signal small bulk nonradiative recombination flux and locate the dominant carrier recombination processes at the outer interfaces. ...
Three dimensional-TiO2 nanotube array photoanode architectures assembled on a thin hollow nanofibrous backbone and their performance in quantum dot-sensitized solar cells
(Royal Society of Chemistry, 2013-02-18)
Facile synthesis of TiO2 nanotube branched (length [similar]0.5 μm) thin hollow-nanofibers is reported. The hierarchical three dimensional photoanodes (H-TiO2-NFs) (only [similar]1 μm thick) demonstrate their excellent ...
Molecular Electronic Coupling Controls Charge Recombination Kinetics in Organic Solar Cells of Low Bandgap Diketopyrrolopyrrole, Carbazole, and Thiophene Polymers
(American Chemical Society, 2013)
Low-bandgap diketopyrrolopyrrole- and carbazole-based polymer bulk-heterojunction, solar cells exhibit much faster charge carrier recombination kinetics than that encountered for less-recombining poly(3-hexylthiophene). ...
Plasmon-enhanced photocurrent in quasi-solid-state dye-sensitized solar cells by the inclusion of gold/silica core–shell nanoparticles in a TiO2 photoanode
(Royal Society of Chemistry, 2013-09)
Direct evidence of the effects of the localized surface plasmon resonance (LSPR) of gold nanoparticles (Au NPs) in TiO2 photoanodes on the performance enhancement in quasi-solid-state dye-sensitized solar cells (DSCs) is ...
Solution-processed small molecule:fullerene bulk-heterojunction solar cells: impedance spectroscopy deduced bulk and interfacial limits to fill-factors
(Royal Society of Chemistry, 2013)
Using impedance spectroscopy, we demonstrate that the low fill factor (FF) typically observed in small molecule solar cells is due to hindered carrier transport through the active layer and hindered charge transfer through ...