Journal ArticleDOI
Optimization of dye-sensitized solar cells prepared by compression method
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TLDR
In this article, the authors showed that adding 4-tert-butylpyridine to the electrolyte resulted in a decreased IPCE response in the whole spectral range, with a specific decrease in the red region, which was attributed to a shift in the conduction band edge of the nanostructured TiO2.Abstract:
Nanostructured TiO2 films have been deposited onto conducting glass and on flexible conducting plastic substrates using a compression technique. Dye-sensitized solar cells prepd. from Degussa P25 TiO2 powder, red dye (Ru(dcbpy)2(SCN)2)(NBu4)2 (dcbpy = 2,2'-bipyridine-4,4'-dicarboxylate) or black dye (Ru(tcterpy)(SCN)3) (tcterpy = 4,4',4''-tricarboxy-2,2':6',2''-terpyridine) and an electrolyte contg. LiI and I2 in 3-methoxypropionitrile were tested using std. photoelectrochem. techniques. The av. overall efficiency of small open cells sensitized with the red dye on plastic substrates was 4.5% (100 W-m-2). In a direct comparison, red and black dye gave about the same efficiencies. For both dyes, addn. of 4-tert-butylpyridine to the electrolyte resulted in a decreased IPCE response in the whole spectral range, with a specific decrease in the red region, which is attributed to a shift in the conduction band edge of the nanostructured TiO2.read more
Citations
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Journal ArticleDOI
Dye-Sensitized Solar Cells
TL;DR: Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency as mentioned in this paper, and many DSC research groups have been established around the world.
Journal ArticleDOI
Review of recent progress in solid-state dye-sensitized solar cells
TL;DR: In this article, the hole transfer process at dye/hole conductor interface, ionic transportation inside hole conductor media and the factors which depress the efficiency of solid-state cells are discussed.
Journal ArticleDOI
Parameters influencing the efficiency of electron injection in dye-sensitized solar cells.
TL;DR: The relative energetics of the dye excited state versus the titanium dioxide acceptor state is a key determinant of the dynamics of electron injection in DSSC, and that variations in these energetic, and therefore in the kinetics and efficiency of electron injections, impact directly upon device photovoltaic efficiency.
Journal ArticleDOI
Quantification of the effect of 4-tert-butylpyridine addition to I-/I3- redox electrolytes in dye-sensitized nanostructured TiO2 solar cells.
TL;DR: Addition of 4-tert-butylpyridine to redox electrolytes used in dye-sensitized TiO2 solar cells has a large effect on their performance, and the working mechanism can be summarized.
Journal ArticleDOI
Polymers in dye sensitized solar cells: overview and perspectives
TL;DR: In this paper, the advantages of using polymers in dye-sensitized solar cells are discussed, highlighting the advantages and problems faced by researchers working in this area, and discussing the problems faced.
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 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
Engineering of Efficient Panchromatic Sensitizers for Nanocrystalline TiO2-Based Solar Cells
Mohammad Khaja Nazeeruddin,Peter Pechy,Thierry Renouard,Shaik M. Zakeeruddin,Robin Humphry-Baker,Pascal Comte,Paul Liska,Le Cevey,E Costa,Valery Shklover,Leone Spiccia,Glen B. Deacon,Carlo Alberto Bignozzi,Michael Grätzel +13 more
TL;DR: The black dye, when anchored to nanocrystalline TiO(2) films achieves very efficient sensitization over the whole visible range extending into the near-IR region up to 920 nm, yielding over 80% incident photon-to-current efficiencies (IPCE).
Journal ArticleDOI
Acid-Base Equilibria of (2,2'-Bipyridyl-4,4'-dicarboxylic acid)ruthenium(II) Complexes and the Effect of Protonation on Charge-Transfer Sensitization of Nanocrystalline Titania.
Md. K. Nazeeruddin,Shaik M. Zakeeruddin,Robin Humphry-Baker,Marie Jirousek,Paul Liska,Nikolaos Vlachopoulos,Valery Shklover,Christian-H. Fischer,Michael Grätzel +8 more
TL;DR: The effect of deprotonation on the performance of these complexes as photosensitizers for nanocrystalline titania was investigated.
Journal ArticleDOI
Subpicosecond interfacial charge separation in dye-sensitized nanocrystalline titanium dioxide films
TL;DR: In this article, the rate of electron injection following optical excitation of the ruthenium dye RuII(2,2,bipyridyl-4,4‘-dicarboxylate)2(NCS)2 was investigated.