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
More filters
Journal ArticleDOI
Preparation and properties of a carbon nanotube-based nanocomposite photoanode for dye-sensitized solar cells
Chuan-Yu Yen,Yu-Feng Lin,Shu-Hang Liao,Cheng-Chih Weng,Ching-Chun Huang,Yi-Hsiu Hsiao,Chen-Chi M. Ma,Chen-Chi M. Ma,Min-Chao Chang,Hsin Shao,Ming-Chi Tsai,Chien-Kuo Hsieh,Chuen-Horng Tsai,Fang-Bor Weng +13 more
TL;DR: The results of dye adsorption and cell performance measurements indicate that introducing MWCNTs would improve the roughness factor of the electrode and the charge recombination of electron/hole (e(-)/h(+)) pairs, and a sol-gel synthesis procedure is proposed as a promising method of preparing the TiO(2)-based nanocomposite.
Journal ArticleDOI
Conducting polymer-based counter electrode for a quantum-dot-sensitized solar cell (QDSSC) with a polysulfide electrolyte
Min-Hsin Yeh,Chuan-Pei Lee,Chen-Yu Chou,Lu-Yin Lin,Hung-Yu Wei,Chih-Wei Chu,Chih-Wei Chu,R. Vittal,Kuo-Chuan Ho +8 more
TL;DR: In this article, the PEDOT-based cell exhibited the highest solar-to-electricity conversion efficiency (� ) of 1.35%, which is remarkably higher than those of the cells with PT-CE (0.09%) and PPy-CE(0.41%) and very slightly higher than that of the cell with sputtered- gold- CE (1.33%).
Journal ArticleDOI
Development of thiocyanate-free, charge-neutral Ru(II) sensitizers for dye-sensitized solar cells
TL;DR: A new series of neutral, thiocyanate-free Ru(II) sensitizers (TFRS-1-3), which are assembled using both 4,4'-carboxy-2,2'-bypyridine and 2-pyridyl pyrazolate ancillaries, exhibit a light-harvesting capability up to 700 nm and superior DSSC performance in conversion efficiency.
Journal ArticleDOI
What Can Density Functional Theory Tell Us about Artificial Catalytic Water Splitting
Michael G. Mavros,Takashi Tsuchimochi,Tim Kowalczyk,Tim Kowalczyk,Alexandra R. McIsaac,Alexandra R. McIsaac,Lee-Ping Wang,Lee-Ping Wang,Troy Van Voorhis +8 more
TL;DR: It is demonstrated that the appropriate treatment of solvent effects is critical for computing accurate redox potentials with DFT, which, in turn, determine the rate-limiting steps and electrochemical overpotentials of water splitting catalysts.
Journal ArticleDOI
Processing energy and signals by molecular and supramolecular systems.
TL;DR: In this concept article, looking at molecular transformations in an unconventional way, a flavor of some of the new features that project the old science of chemistry towards novel achievements are given.
References
More filters
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
Photoelectrochemical cells : Materials for clean energy
TL;DR: In this paper, the authors look into the historical background, and present status and development prospects for photoelectrochemical cells, based on nanocrystalline materials and conducting polymer films.
Journal ArticleDOI
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.