Journal ArticleDOI
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
TLDR
In this article, the authors describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency.Abstract:
THE large-scale use of photovoltaic devices for electricity generation is prohibitively expensive at present: generation from existing commercial devices costs about ten times more than conventional methods1. Here we describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency. The device is based on a 10-µm-thick, optically transparent film of titanium dioxide particles a few nanometres in size, coated with a monolayer of a charge-transfer dye to sensitize the film for light harvesting. Because of the high surface area of the semiconductor film and the ideal spectral characteristics of the dye, the device harvests a high proportion of the incident solar energy flux (46%) and shows exceptionally high efficiencies for the conversion of incident photons to electrical current (more than 80%). The overall light-to-electric energy conversion yield is 7.1-7.9% in simulated solar light and 12% in diffuse daylight. The large current densities (greater than 12 mA cm-2) and exceptional stability (sustaining at least five million turnovers without decomposition), as well as the low cost, make practical applications feasible.read more
Citations
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Journal ArticleDOI
Photoelectrochemical Properties of a Porous Nb2O5 Electrode Sensitized by a Ruthenium Dye
TL;DR: In this paper, the photoelectrochemical properties of Nb2O5 and ZnO2 porous semiconductor films sensitized by the ruthenium(II) cis-bis(thiocyanato)bis(2,2‘-bipyridyl-4,4‘)-dicarboxylic acid complex were studied.
Journal ArticleDOI
Effect of Different Hole Transport Materials on Recombination in CH3NH3PbI3 Perovskite-Sensitized Mesoscopic Solar Cells.
TL;DR: It is shown that the nature of the HTM is essential for charge recombination and elucidates that finding an optimal HTM for the perovskite solar cell includes controlling the perOVskite/HTM interaction.
Journal ArticleDOI
Nanostructured electrodes for lithium-ion and lithium-air batteries: the latest developments, challenges, and perspectives
TL;DR: In this paper, the authors provide an overview of the critical scientific challenges facing the development of advanced batteries, various unique attributes of nanostructures or nano-architectures applicable to lithium-ion and lithium-air batteries, the latest developments in novel synthesis and fabrication procedures, the unique capabilities of some powerful, in situ characterization techniques vital to unraveling the mechanisms of charge and mass transport processes associated with battery performance, and the outlook for future-generation batteries that exploit nanoscale materials for significantly improved performance to meet the everincreasing demands of emerging technologies.
Journal ArticleDOI
Carbon nanotubes—electronic/electrochemical properties and application for nanoelectronics and photonics
Vito Sgobba,Dirk M. Guldi +1 more
TL;DR: The fundamental chemical, redox, electrochemical, photoelectrochemical, optical and optoelectronic features of carbon nanotubes are surveyed with particular emphasis on the most relevant applications as electron donor/electron acceptor or as electron conductor/hole conductor materials, in solutions and in the solid state.
Journal ArticleDOI
Flexible, long-lived, large-area, organic solar cells
Christoph Lungenschmied,Gilles Dennler,Helmut Neugebauer,Serdar N. Sariciftci,Markus Glatthaar,Toby B. Meyer,Andreas F. Meyer +6 more
TL;DR: In this article, a large area (>10 cm 2 ) interconnected organic solar cell modules are reported, both on glass substrates as well as on flexible ultra-high barrier foils, reaching 1.5% and 0.5 % overall power conversion efficiency under AM1.5 conditions.
References
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Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
Journal ArticleDOI
Ru(II) polypyridine complexes: photophysics, photochemistry, eletrochemistry, and chemiluminescence
Alberto Juris,Vincenzo Balzani,F. Barigelletti,Sebastiano Campagna,Peter Belser,A. Von Zelewsky +5 more
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Vectorial electron injection into transparent semiconductor membranes and electric field effects on the dynamics of light-induced charge separation
TL;DR: In this article, the dynamics of charge recombination following electron injection from the excited state of RuL{sub 3} into the conduction band of the semiconductor were examined under potentiostatic control of the electric field within the space charge layer of the membrane.
Journal ArticleDOI
The impact of semiconductors on the concepts of electrochemistry
TL;DR: In this article, it was realized that semiconductor electrodes behave differently in many respects and offer new insights into the role played by the electronic properties of a solid in its electrochemical reactivity.
Journal ArticleDOI
Electrochemistry and photochemistry of MoS2 layer crystals. I
H. Tributsch,J.C. Bennett +1 more
TL;DR: In this article, the chemical and photochemical behavior of MoS 2 -van der Waals surfaces in contact with an aqueous electrolyte has been investigated by means of electrochemical techniques.