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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 ...
Series resistance in organic bulk-heterojunction solar devices: Modulating carrier transport with fullerene electron traps
(Elsevier, 2012)
Series resistance is one of the key parameters affecting the performance of organic photovoltaic devices. Several electronic mechanisms arising from different structures within the solar cell can contribute to increasing ...
Triplication of the photocurrent in dye solar cells by increasing the elongation of the π-conjugation in Zn-porphyrin sensitizers
(Wiley-VCH Verlag Berlin, 2011)
Porphyrins are promising sensitizers for dye solar cells (DSCs) but narrow absorption bands at 400-450 and 500-650 nm limit their light-harvesting properties. Increasing elongation of the π-conjugation and loss of symmetry ...
Dilemmas of dye-sensitized solar cells
(Wiley-VCH Verlag Berlin, 2011)
Ferrocene to the rescue: The dye-sensitized solar cell allows changes in the energetics of electron transport, molecular absorbers, and hole transport materials to better harvest the energy of solar photons (see picture). ...
First-passage-time analysis of atomic-resolution simulations of the ionic transport in a bacterial porin
(American Physical Society, 2011-02-16)
We have studied the dynamics of chloride and potassium ions in the interior of the Outer membrane porin F (OmpF) under the influence of an external electric field. From the results of extensive all-atom molecular dynamics ...
Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells
(Royal Society of Chemistry, 2011-05-13)
Ordered one-dimensional metal oxides are considered promising architectures for dye-sensitized solar cells (DSC). Here we explore the properties determining the photovoltaic performance of DSC based on titanium dioxide ...
Molecular dynamics simulations of concentrated aqueous electrolyte solutions
(Taylor & Francis, 2011)
Transport properties of concentrated electrolytes have been analysed using classical molecular dynamics simulations with
the algorithms and parameters typical of simulations describing complex electrokinetic phenomena. ...
Current-voltage characteristics of bulk heterojunction organic solar cells: connection between light and dark curves
(Wiley, 2011-11)
A connection is established between recombination and series resistances extracted from impedance spectroscopy and current-voltage curves of polythiophene:fullerene organic solar cells. Recombination is shown to depend ...