Journal ArticleDOI
Solar energy conversion by dye-sensitized photovoltaic cells
TLDR
Developing solar cells that are based on the sensitization of mesoscopic oxide films by dyes or quantum dots, and the examples for the first outdoor application of such solar cells will be provided.Abstract:
The quality of human life depends to a large degree on the availability of energy. This is threatened unless renewable energy resources can be developed in the near future. Chemistry is expected to make important contributions to identify environmentally friendly solutions of the energy problem. One attractive strategy discussed in this Forum Article is the development of solar cells that are based on the sensitization of mesoscopic oxide films by dyes or quantum dots. These systems have already reached conversion efficiencies exceeding 11%. The underlying fundamental processes of light harvesting by the sensitizer, heterogeneous electron transfer from the electronically excited chromophore into the conduction band of the semiconductor oxide, and percolative migration of the injected electrons through the mesoporous film to the collector electrode will be described below in detail. A number of research topics will also be discussed, and the examples for the first outdoor application of such solar cells wi...read more
Citations
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Journal ArticleDOI
Die Zukunft der Energieversorgung – Herausforderungen und Chancen
Nicola Armaroli,Vincenzo Balzani +1 more
Journal ArticleDOI
Tuning the absorption, charge transport properties, and solar cell efficiency with the number of thienyl rings in platinum-containing poly(aryleneethynylene)s.
Wai Yeung Wong,Xing-Zhu Wang,Ze He,Kwok-Kwan Chan,Aleksandra B. Djurišić,K. Y. Cheung,Cho Tung Yip,Alan Man Ching Ng,Yan Yan Xi,Chris S. K. Mak,Wai Kin Chan +10 more
TL;DR: The synthesis, characterization, and photophysics of a series of solution-processable and strongly visible-light absorbing platinum(II) polyynes containing bithiazole-oligo(thienyl) rings were presented and provides an attractive approach to developing conjugated metallopolymers offering broad solar absorptions and tunable solar cell efficiency.
Journal ArticleDOI
Dye-sensitized solar cells with natural dyes extracted from achiote seeds
Nikte Gómez-Ortiz,I.A. Vázquez-Maldonado,A.R. Pérez-Espadas,Gonzalo J. Mena-Rejón,J.A. Azamar-Barrios,Gerko Oskam +5 more
TL;DR: In this article, the application of natural dyes extracted from the seeds of the achiote shrub (Bixa orellana L.) in dye-sensitized solar cells (DSCs) was explored.
Journal ArticleDOI
Efficient Dye-Sensitized Solar Cells Using Red Turnip and Purple Wild Sicilian Prickly Pear Fruits
Giuseppe Calogero,Gaetano Di Marco,Silvia Cazzanti,Stefano Caramori,Roberto Argazzi,Aldo Di Carlo,Carlo Alberto Bignozzi +6 more
TL;DR: Dye-sensitized solar cells (DSSCs) were assembled by using the bougainvillea flowers, red turnip and the purple wild Sicilian prickly pear fruit juice extracts as natural sensitizers of TiO2 films to improve solar energy conversion efficiency.
Journal ArticleDOI
Optical band gaps of organic semiconductor materials
José C. S. Costa,Ricardo J. S. Taveira,Carlos F. R. A. C. Lima,Carlos F. R. A. C. Lima,Adélio Mendes,Luís M. N. B. F. Santos +5 more
TL;DR: In this article, the electronic and optical properties of π-conjugated systems were evaluated by UV-Vis spectroscopy in CHCl3 solution for a large number of relevant πconjugation systems: tris-8-hydroxyquinolinatos (Alq3, Gaq3 and Inq3); oligoacenes (naphthalene, anthracene, tetracene and rubrene); oligothiophenes (α-2T, β-2t, α-3T,β-4T and α-
References
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Journal ArticleDOI
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
TL;DR: 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.
Journal Article
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Conversion of light to electricity by cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline titanium dioxide electrodes
Mohammad Khaja Nazeeruddin,Andreas Kay,I. Rodicio,Robin Humphry-Baker,E. Mueller,Paul Liska,Nick Vlachopoulos,Michael Graetzel +7 more
TL;DR: Cis-X 2 Bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) complexes were prepared and characterized with respct to their absorption, luminescence, and redox behavior.
Journal ArticleDOI
Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies
Udo Bach,D. Lupo,Pascal Comte,Jacques-E. Moser,F. Weissörtel,Josef Salbeck,H. Spreitzer,Michael Grätzel +7 more
TL;DR: A dye-sensitized heterojunction of TiO2 with the amorphous organic hole-transport material 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenyl-amine)9,9′-spirobifluorene (OMeTAD) was described in this article.
Journal ArticleDOI
Efficient photodiodes from interpenetrating polymer networks
J. J. M. Halls,C. A. Walsh,Neil C. Greenham,E.A. Marseglia,Richard H. Friend,Stephen C. Moratti,A.B. Holmes +6 more
TL;DR: In this paper, the interpenetrating network formed from a phase-segregated mixture of two semiconducting polymers is shown to provide both the spatially distributed interfaces necessary for efficient charge photo-generation, and the means for separately collecting the electrons and holes.