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From Flat to Nanostructured Photovoltaics: Balance between Thickness of the Absorber and Charge Screening in Sensitized Solar Cells
American Chemical Society (2012-01)Nanoporous metal oxide electrodes provide a high internal area for dye anchoring in dye-sensitized solar cells, but the thickness required to extinguish the solar photons also enhances recombination at the TiO2/electrolyte ... -
From Frequency Domain to Time Transient Methods for Halide Perovskite Solar Cells: The Connections of IMPS, IMVS, TPC, and TPV
American Chemical Society (2021-08-26)The correlation of different methods of measurement can become an important tool to identify the dominant physical elements that govern the electronic and ionic dynamics in perovskite solar cells. The diverse phenomena ... -
From Salts to Ionic Liquids by Systematic Structural Modifications: A Rational Approach Towards the Efficient Modular Synthesis of Enantiopure Imidazolium Salts
Wiley-VCH (2010)This paper reports a simple and robust modular synthetic strategy that leads to a large variety of configurationally and structurally diverse imidazole-based chiral ionic liquids (CILs) by lipase-catalyzed resolution. The ... -
Fullerene-Based Materials as Hole-Transporting/Electron Blocking Layers. Applications in Perovskite Solar Cells
Wiley (2018)Here we report for the first time an efficient fullerenebased compound, FU7, able to act as Hole-Transporting Material (HTM) and electron blocking contact. It has been applied on perovskite solar cells (PSCs), obtaining ... -
General Working Principles of CH3NH3PbX3 Perovskite Solar Cells
American Chemical Society (2014)Organometal halide perovskite-based solar cells have recently realized large conversion efficiency over 15% showing great promise for a new large scale cost-competitive photovoltaic technology. Using impedance spectroscopy ... -
Germanium coating boosts lithium uptake in Si nanotube battery anodes
Royal Society of Chemistry (2014)Si nanotubes for reversible alloying reaction with lithium are able to accommodate large volume changes and offer improved cycle retention and reliable response when incorporated into battery anodes. However, Si nanotubes ... -
Ghost interference with classical partially coherent light pulses
American Physical Society (2008)The two-photon temporal coincidence detection amplitude obeys a pair of equations identical to those of classical partially coherent plane-wave pulses propagating in linearly dispersive media. These equations are also ... -
Glassy dynamics predicted by mutual role of free and activation volumes
Royal Society of Chemistry (2019)Broadband Dielectric Spectroscopy (BDS) at elevated pressures and Positron Annihilation LifetimeSpectroscopy (PALS) are employed to elucidate the importance of the ratio of activation and freevolumes during vitrification. ... -
Green nanoparticle synthesis at scale : a perspective on overcoming the limits of pulsed laser ablation in liquids for high-throughput production
Royal Society of Chemistry (2023-07-06)Nanoparticles have become increasingly important for a variety of applications, including medical diagnosis and treatment, energy harvesting and storage, catalysis, and additive manufacturing. The development of nanoparticles ... -
Harnessing infrared photons for photoelectrochemical hydrogen generation. A PbS quantum dot based "quasi-artificial leaf"
American Chemical Society (2013)Hydrogen generation by using quantum dot (QD) based heterostructures has emerged as a promising strategy to develop artificial photosynthesis devices. In the present study, we sensitize mesoporous TiO2 electrodes with ... -
Harnessing prion-inspired amyloid self-assembly for sustainable and biocompatible proton conductivity
Royal Society of Chemistry (2024-04)Protein-based materials have emerged as promising candidates for proton-conducting biomaterials. Therefore, drawing inspiration from the amino acid composition of prion-like domains, we designed short self-assembling ... -
High carrier density and capacitance in TiO2 Nanotube arrays induced by electrochemical doping
American Chemical Society (2008)The paper describes the electronic charging and conducting properties of vertically oriented TiO2 nanotube arrays formed by anodization of Ti foil samples. The resulting films, composed of vertically oriented nanotubes ... -
High performing PbS Quantum Dot Sensitized Solar Cells exceeding 4% efficiency: The role of metal precursor in the electron injection and charge separation
Royal Society of Chemistry (2013)Here we report the preparation of high performance Quantum Dot Sensitized Solar Cells (QDSCs) based on PbS–CdS co-sensitized nanoporous TiO2 electrodes. QDs were directly grown on the TiO2 mesostructure by the Successive ... -
High proton conductivity at low and moderate temperature in a simple family of Prussian blue analogs, divalent transition metal hexacyanocobaltates (III)
Elsevier (2020-11-10)Proton conductivity behavior was studied in a family of hexacyanocobaltates with divalent transition metals (II), HCCMs. The HCCMs, with molecular formula M3[Co(CN)6]2∙xH2O (where M = Ni, Co, Fe, Mn and Cd), had cubic ... -
High reduction of interfacial charge recombination in colloidal quantum dot solar cells by metal oxide surface passivation
The Royal Society of Chemistry (2015)Bulk heterojunction (BHJ) solar cells based on colloidal QDs and metal oxide nanowires (NWs) possess unique and outstanding advantages in enhancing light harvesting and charge collection in comparison to planar architectures. ... -
High sampling rate single-pixel digital holography system employing a DMD and phase-encoded patterns
Optical Society of America (2018)A single-pixel digital holography system with phase-encoded illumination using a digital micromirror device (DMD) as a spatial light modulator (SLM) is presented. The enhanced switching rate of DMDs, far exceeding the ... -
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 ... -
Hole conductivity and acceptor density of p-type CuGaO2 nanoparticles determined by impedance spectroscopy: The effect of Mg doping
Elsevier (2013)Delafossite materials like CuGaO2 have appeared as promising p-type semiconductor materials for their exploitation in tandem dye sensitized solar cells and water splitting photoelectrochemical cells. However, the intrinsic ... -
Hole Transport and Recombination in All-Solid Sb2S3-Sensitized TiO2 Solar Cells Using CuSCN As Hole Transporter
American Chemical Society (2012)All-solid semiconductor-sensitized solar cells lack models allowing their characterization in terms of the fundamental processes of charge transport and recombination. Nanostructured TiO 2/Sb 2S 3/CuSCN solar cells were ... -
Hopf bifurcations in electrochemical, neuronal, and semiconductor systems analysis by impedance spectroscopy
American Institute of Physics (2022-03-16)Spontaneous oscillations in a variety of systems, including neurons, electrochemical, and semiconductor devices, occur as a consequence of Hopf bifurcation in which the system makes a sudden transition to an unstable ...