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
Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies
TL;DR: In this article, a simple low cost 7% efficient photo electrochemical solar cell made from a trinuclear Ru dye complex adsorbed on the very rough surface of a colloidal TiO 2 film was presented using procedures described in the literature.
Journal ArticleDOI
A New Method for Manufacturing Nanostructured Electrodes on Plastic Substrates
Henrik Lindström,Anna Holmberg,Eva Magnusson,Sten-Eric Lindquist,Lennart Malmqvist,Anders Hagfeldt +5 more
TL;DR: In this article, the authors describe a new method for manufg. a nanostructured porous layer of a semiconductor material on a conducting plastic substrate for use in an electrochem.
Journal ArticleDOI
Mini review on photocatalysis of titanium dioxide nanoparticles and their solar applications
TL;DR: The photo-induced electron-hole pairs have been utilized to generate electricity in solar cells, to split water into hydrogen and oxygen, to oxidize and degrade inorganic/organic/biological compounds in environments as well as to create superhydrophilicity as mentioned in this paper.
Journal ArticleDOI
The Growth Kinetics of TiO2 Nanoparticles from Titanium(IV) Alkoxide at High Water/Titanium Ratio
TL;DR: In this article, the growth kinetics of TiO2 nanoparticles synthesized from aqueous solution using titanium(IV) isopropoxide as precursor were reported, and the radius of primary particles was found to be between 1.5 and 8 nm.
Journal ArticleDOI
Electronic and optoelectronic materials and devices inspired by nature
Paul Meredith,Christopher J. Bettinger,Mihai Irimia-Vladu,Mihai Irimia-Vladu,A B Mostert,Paul E. Schwenn +5 more
TL;DR: This short review article focuses primarily on organic and bio-organic electronic and optoelectronic systems derived from or inspired by nature, and outlines the complex charge transport and photo-physics which control their behaviour.
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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Vectorial electron injection into transparent semiconductor membranes and electric field effects on the dynamics of light-induced charge separation
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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.