+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Efficient electron transfer and sensitizer regeneration in stable pi-extended tetrathiafulvalene-sensitized solar cells

, : Efficient electron transfer and sensitizer regeneration in stable pi-extended tetrathiafulvalene-sensitized solar cells. Journal of the American Chemical Society 132(14): 5164-5169

The development of metal-free organic sensitizers is a key issue in dye-sensitized solar cell research. We report successful photovoltaic conversion with a new class of stable tetrathiafulvalene derivatives, showing surprising electrochemical and kinetic properties. With time-resolved spectroscopy we could observe highly efficient regeneration of the photo-oxidized tetrathiafulvalene sensitizers, which were attached to a mesoporous TiO(2) film, by a redox mediator in the pores (iodide/tri-iodide), even though the measured driving force for regeneration was only approximately 150 mV. This important proof-of-concept shows that sensitizers with a small driving force, i.e. the oxidation potential of the sensitizer is separated from the redox potenial of the mediator by as little as 150 mV, can operate functionally in dye-sensitized solar cells and eventually aid to reduce photovoltage losses due to poor energetic alignment of the materials.


PMID: 20307069

DOI: 10.1021/ja909291h

Other references

Isshiki, N.; Tanabe, M., 1980: A simple technique to prevent stenosis of the tracheostoma after total laryngectomy. Stenosis of the tracheostoma after total laryngectomy can be prevented by the addition of a simple Y-incision to the U-incision for total laryngectomy. This technique ensures a wide stoma, eliminating the need of tracheal cannulation even immediat...

Bhalla; Karim, 1990: Erratum: Resonant transfer and excitation in collisions of Li-like F6+ and Ca17+ with light targets. Physical Review. A, Atomic, Molecular, and Optical Physics 41(7): 4097-4097

Anonymous, 2004: Exposure. Order for HIV-positive man to wear spit hood in court upheld. Aids Policy & Law 19(9): 6-6

Chao, J-I.; Kuo, P-Chen., 2004: Role of p53 and p38 MAP kinase in nitric oxide-induced G2/M arrest and apoptosis in the human lung carcinoma cells. Carcinogenesis 25(4): 645-645

Connolly, H., E.; Van-Der-Gast, C., J.; Wylie, D.; Stephenson, T.; Thompson, I., P., 2006: Enhanced biological treatment of spent metalworking fluids by prior removal of a polymer. The biological treatment of spent synthetic metalworking fluid (MWF) has been investigated in many studies, with most reporting the presence of undegraded components in the residual waste. In this study a hybrid approach to waste treatment of spen...

Velican, D.; Popescu-Miclosanu, S.; Velican, C., 1977: The emergence areas of human coronary arteries a histogenetic histologic and histochemical study. The main emergence areas of the coronary tree were investigated from fetuses to adolescents. An important histological and histochemical heterogeneity, augmenting with age, was revealed. The particular tendency to fibrosis of the flow divider regi...

Zhong, T.; Jiang, Z.; Wang, P.; Bie, S.; Zhang, F.; Zuo, B., 2016: Silk fibroin/copolymer composite hydrogels for the controlled and sustained release of hydrophobic/hydrophilic drugs. In the present study, a composite system for the controlled and sustained release of hydrophobic/hydrophilic drugs is described. Composite hydrogels were prepared by blending silk fibroin (SF) with PLA-PEG-PLA copolymer under mild aqueous conditio...

Shea, P.A.; Ahlers, S.T.; Davis, J.L., 1994: The effects of glucose on acetylcholine neurotransmission during exposure to environmental cold stress. Society for Neuroscience Abstracts 20(1-2): 82

Negueroles, J.J.nes, O., 1979: Production in vitro of rootstock. Journal of horticultural science 54(4): 279-281

Poinar, G.O.; Jr., 1970: Oryctonemagot/talk gen. et sp. nov., (Rhabditidae; Nematoda) from the genital system of Oryctes monoceros 01. (Scarabaeidae: Coleoptera) in West Africa. J. Helminth.: 44: 1-10