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
Plasmon-Assisted Photocurrent Generation from Visible to Near-Infrared Wavelength Using a Au-Nanorods/TiO2 Electrode
TL;DR: In this article, the plasmonic photoelectric conversion from visible to near-infrared wavelength without deteriorating photo-electric conversion by using electrodes in which gold nanorods are elaborately arrayed on the surface of a TiO2 single crystal.
Journal ArticleDOI
Advances in the field of π-conjugated 2,2':6',2"-terpyridines.
TL;DR: Synthetic strategies towards π-conjugated terpyridines and their incorporation into advanced supramolecular architectures are evaluated and applications as photoactive species in, e.g., photovoltaic devices, polymer light-emitting diodes and nanotechnology are discussed comprehensively.
Journal ArticleDOI
Development of bioinspired artificial photosynthetic systems
TL;DR: Simple electron donor-acceptor dyads linked by covalent or non-covalent bonding have been developed, providing a variety of applications including construction of organic solar cells and development of efficient photocatalytic systems for the solar energy conversion.
Journal ArticleDOI
TiO2 nanoparticles as functional building blocks.
TL;DR: This work aims to demonstrate the efforts towards in-situ applicability of EMMARM, which aims to provide real-time information about the physical properties of E-modulus and its applications in the energy sector.
Journal ArticleDOI
Water‐Splitting Catalysis and Solar Fuel Devices: Artificial Leaves on the Move
TL;DR: An overview of the recent progress in electrochemical and photo-electrocatalytic water splitting devices is presented, using both molecular water oxidation complexes (WOCs) and nano-structured assemblies to develop an artificial photosynthetic system.
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.
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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.