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Energy transfer versus charge separation in hybrid systems of semiconductor quantum dots and Ru-dyes as potential co-sensitizers of TiO2-based solar cells.
(© 2011 American Institute of Physics, 2011-07)
Hybrid structures of colloidal quantum dots (QDs) with Ru-dyes have been studied as candidates for panchromatic sensitizers for TiO2-based solar cells. Steady-state and time resolved photoluminescence spectroscopy and ...
Panchromatic sensitized solar cells based on metal sulfide quantum dots grown directly on nanostructured TiO2 electrodes
(American Chemical Society, 2011-02)
The use of narrow band gap semiconductors such as PbS may expand the light absorption range to the near-infrared region in quantum-dot-sensitized solar cells (QDSCs), increasing the generated photocurrent. However, the ...
Effect of the bridge substitution on the efficiency of dye-sensitized solar cells
(Elsevier, 2012-12)
We have designed and synthesized a novel D–π–A dye based on zinc porphyrin as the donor, cyanoacrylic acid as the acceptor and trans-bis(3,4-ethylenedioxythiophene)vinylene as the bridge. Under standard global AM 1.5 solar ...
Electrochemical and Photoelectrochemical Investigation of Water Oxidation with Hematite Electrodes
(Royal Society of Chemistry, 2012-04)
Atomic layer deposition (ALD) was utilized to deposit uniform thin films of hematite (α-Fe2O3) on transparent conductive substrates for photocatalytic water oxidation studies. Comparison of the oxidation of water to the ...
Air-stable and efficient inorganic–organic heterojunction solar cells using PbS colloidal quantum dots co-capped by 1-dodecanethiol and oleic acid
(Royal Society of Chemistry, 2012)
PbS colloidal quantum dot (CQD)-sensitized inorganic–organic
heterojunction solar cells fabricated by using the PbS CQDs
co-capped by the oleic acid (OA) and 1-dodecanethiol (DT)
ligand showed better device stability ...
Carrier density and interfacial kinetics of mesoporous TiO2 in aqueous electrolyte determined by impedance spectroscopy
(Elsevier, 2012)
Water splitting at a semiconductor/solution interface with the only input of sunlight to generate hydrogen is one of the most attractive strategies to produce and store chemical energy. In the present study we have ...
On voltage, photovoltage, and photocurrent in bulk heterojunction organic solar cells
(American Chemical Society, 2011-07)
The interpretation of voltage, photovoltage, and photocurrent in polymer/fullerene bulk heterojunction (BHJ) solar cells is discussed in terms of fundamental device models and results of capacitance spectroscopy. First we ...
Linearity, saturation and blocking in a large multiionic channel: divalent cation modulation of the OmpF porin conductance
(Elsevier, 2011-01)
Measurement of unitary conductance is a fundamental step in the characterization of a protein ion channelpermeabilizing a membrane. We study here the effect of salts of divalent cations on the OmpF channelconductance ...
Divalent cations reduce the pH sensitivity of OmpF channel inducing the pKa shift of key acidic residues
(RSC Publishing, 2010-11-03)
In contrast to the highly-selective channels of neurophysiology employing mostly the exclusion mechanism, different factors account for the selectivity of large channels. Elucidation of these factors is essential for ...
Protein Ion Channels as Molecular Ratchets. Switchable Current Modulation in Outer Membrane Protein F Porin Induced by Millimolar La3+ Ions
(American Chemical Society, 2012)
The quest for innovative tunable nanodevices has mainly focused on switches that modulate their properties through engineered conformational changes. We propose here an alternative route that takes advantage of the crucial ...