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Colloidal PbS and PbSeS Quantum Dot Sensitized Solar Cells Prepared by Electrophoretic Deposition
American Chemical Society (2012)Here we report the developement of quantum dot sensitized solar cells (QDSCs) using colloidal PbS and PbSeS QDs and polysulfide electrolyte for high photocurrents. QDSCs have been prepared in a novel sensitizing way employing ... -
Combining Modulated Techniques for the Analysis of Photosensitive Devices
Wiley-VCH GmbH (2021-09-03)Small-perturbation techniques such as impedance spectroscopy (IS), inten-sity-modulated photocurrent spectroscopy (IMPS), and intensity-modulated photovoltage spectroscopy (IMVS) are useful tools to characterize and model ... -
Competitive Photoelectrochemical Methanol and Water Oxidation with Hematite Electrodes
ACS Publications (2015-03-24)Photocatalytic water and methanol oxidation were studied at thin film hematite electrodes synthesized by atomic layer deposition (ALD). Systematic photoelectrochemical characterization along with O2 evolution measurements ... -
Complex shaping of the depth of focus
Optical Society of America (2020)In this manuscript an exact solution to the inverse problem of axial beam shaping along the focus of a convergent lens is found. This allows to extend, within the framework of the scalar theory of diffraction, the mathematical ... -
Conductivity study of Zeolitic Imidazolate Frameworks, Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks, and mixed matrix membranes of Polyetherimide/ Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks for proton conducting applications
Elsevier (2017)ZIF-8 (Z8), ZIF-67 (Z67), and ZMix, a Zn/Co bimetallic zeolitic imidazolate framework (ZIF), were syn- thesized and doped with tetrabutylammonium hydroxide (ZIFsT). The obtained powders were used as fillers for polyetherimide ... -
Configurational entropy calculation of poly(α-alkyl β,L-aspartate)s amorphous and crystalline films using gas permeation
Elsevier (2014)The permeability and diffusion coefficient of gases such as N2, O2 and CO2 through two polymeric membranes of poly(α-alkyl β,L-aspartate)s (PAALA-n) were determined by the “time-lag” method. One of these membranes was ... -
Conjugated Organic Cations to Improve the Optoelectronic Properties of 2D/3D Perovskites
American Chemical Society (2017)Use of C6H5NH3I as an organic cation instead of CH3(CH2)3NH3I in the synthesis of 2D/3D perovskites (C6H5NH3I)2(CH3NH3I)n−1(PbI2)n leads to a material with significantly improved photovoltaic and optoelectronic properties ... -
Consistent formulation of the crossover from density to velocity dependent recombination in organic solar cells
AIP Publishing (2015)Carrier recombination is a central process in bulk heterojunction organic solar cells. Based on the competition of hopping rates that either implies escape in a broad density of states or recombination across the interface, ... -
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 ... -
Continuous-flow crystallisation in 3D-printed compact devices
Royal Society of Chemistry (2019)A flexible and cost-effective methodology to develop compact flow devices with heat exchange ability is presented here. Additive manufacturing techniques allows the rapid design and manufacturing of modular jacketed flow ... -
Control of I–V Hysteresis in CH3NH3PbI3 Perovskite Solar Cell
ACS Publications (2015-11-09)Mismatch of current (I)-voltage (V) curves with respect to the scan direction, so-called I–V hysteresis, raises critical issue in MAPbI3 (MA = CH3NH3) perovskite solar cell. Although ferroelectric and ion migration have ... -
Controlled Carbon Nitride Growth on Surfaces for Hydrogen Evolution Electrodes
Wiley (2014-04-01)Efficient and low-cost electrocatalysts for the hydrogen evolution reaction are highly desired for future renewable energy systems. Described herein is the reduction of water to hydrogen using a metal-free carbon nitride ... -
Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells
Royal Society of Chemistry (2015)Despite the large photovoltaic performance recently achieved, many aspects of the working principles of hybrid organic–inorganic perovskite solar cells remain to be unveiled. We analyze the experimental features observed ... -
Core/Shell Colloidal Quantum Dot Exciplex States for the Development of Highly Efficient Quantum-Dot-Sensitized Solar Cells
American Chemical Society (2013)Searching suitable panchromatic QD sensitizers for expanding the light-harvesting range, accelerating charge separation, and retarding charge recombination is an effective way to improve power conversion efficiency (PCE) ... -
Corneal relaxation time estimation as a function of tear oxygen tension in human cornea during contact lens wear
John Wiley & Sons (2019-12-03)The purpose is to estimate the oxygen diffusion coefficient and the relaxation time of the cornea with respect to the oxygen tension at the cornea–tears interface. Both findings are discussed. From the experimental data ... -
Coronavirus E protein forms ion channels with functionally and structurally-involved membrane lipids
Elsevier (2012-10)Coronavirus (CoV) envelope (E) protein ion channel activity was determined in channels formed in planar lipid bilayers by peptides representing either the transmembrane domain of severe acute respiratory syndrome CoV ... -
Counterbalance between Surface and Confinement Effects As Studied for Amino-Terminated Poly(propylene glycol) Constraint in Silica Nanopores
American Chemical Society (2019)Broadband dielectric spectroscopy (BDS) and orthopositronium annihilation lifetime spectroscopy (PALS) are combined to study the molecular dynamics and the free volume of poly(propylene glycol) terminated with amino end ... -
Current-controlled memristors: resistive switching systems with negative capacitance and inverted hysteresis
American Physical Society (2023)Resistive switching in memristors is being amply investigated for different applications in non-volatile memory (RRAM), neuromorphic computing and programmable logic devices. Memristors are conducting devices in which ... -
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 ...