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Your search keyword '"Hummelen, Jan C."' showing total 10 results
Start Over Author "Hummelen, Jan C." Journal chemical communications
10 results on '"Hummelen, Jan C."'

5. Diels–Alders adducts of C60 and esters of 3-(1-indenyl)-propionic acid: alternatives for [60]PCBM in polymer:fullerene solar cells.

Author

Sieval, Alexander B., Treat, Neil D., Rozema, Desirée, Hummelen, Jan C., and Stingelin, Natalie

Subjects
SOLAR cells, PROPIONIC acid derivatives, DIELS-Alder reaction, ESTER derivatives, INDENE, FULLERENES, CHEMICAL adducts, BUTYRIC acid
Abstract

A series of new, easily synthesized C60–fullerene derivatives is introduced that allow for optimization of the interactions between rr-P3HT and the fullerene by systematic variation of the size of the ester group. Two compounds gave overall cell efficiencies of 4.8%, clearly outperforming [60]PCBM which gives 4.3% under identical conditions. [ABSTRACT FROM AUTHOR]

Published
2015
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8. Fullerene derivatives with increased dielectric constants.

Author

Jahani, Fatemeh, Chiechi, Ryan C., Hummelen, Jan C., Torabi, Solmaz, and Anton Koster, L. Jan

Subjects
FULLERENE derivatives, PERMITTIVITY, SOLAR cells, ELECTRONIC ceramics, PHOTOVOLTAIC power generation, RING formation (Chemistry), ABSORPTION spectra, ELECTRON mobility
Abstract

The invention of new organic materials with high dielectric constants is of extreme importance for the development of organic-based devices such as organic solar cells. We report on a synthetic way to increase the dielectric constant of fullerene derivatives. It is demonstrated that introducing triethylene glycol monoethyl ether (teg) side chains into fulleropyrrolidines increases the dielectric constant by ~46 percent without devaluation of optical properties, electron mobility and the energy level of the compound. [ABSTRACT FROM AUTHOR]

Published
2014
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10. Influence of the solvent on the crystal structure of PCBMPCBM: Phenyl-C61-Butyric acid Methyl ester. IUPAC: methyl 5-3′H-cyclopropa1,9C60-Ih5,6fullerenyl-5-phenylpentanoate.and the efficiency of MDMO-PPV:PCBM ‘plastic’ solar cells

Author

Rispens, Minze T., Meetsma, Auke, Rittberger, Roman, Brabec, Christoph J., Sariciftci, N. Serdar, and Hummelen, Jan C.

Abstract

Two crystal structures of PCBM, obtained from different crystallisation solvents, are presented; a proposed link with solvent dependence of the efficiency of MDMO-PPV:PCBM solar cells is described.

Published
2003
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