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Journal of Photonics for Energy • Open Access

Optimized solution-processed merocyanine:PCBM organic bulk heterojunction solar cell
Author(s): Nils M. Kronenberg; Hannah Bürckstümmer; Manuela Deppisch; Frank Würthner; Klaus Meerholz

Paper Abstract

We present the in-depth investigation of solution-processed bulk-heterojunction solar cells based on the merocyanine dye MD304 as a donor in combination with the soluble fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as acceptor. The optimized MD304:PCBM devices exhibit an external quantum efficiency of ca. 50%, and a power conversion efficiency of up to 2.1% under standard illumination and 2.7% under reduced illumination intensities. Because of the strongly dipolar character of merocyanine dyes the bulk material features a relatively large dielectric constant, which is beneficial for charge transport and reduced carrier recombination. This somewhat compensates the limited hole mobility of the dipolar merocyanine.

Paper Details

Date Published: 1 January 2011
PDF: 8 pages
J. Photon. Energy. 1(1) 011101 doi: 10.1117/1.3528043
Published in: Journal of Photonics for Energy Volume 1, Issue 1
Show Author Affiliations
Nils M. Kronenberg, Univ. zu Köln (Germany)
Hannah Bürckstümmer, Julius-Maximilians-Univ. Würzburg (Germany)
Manuela Deppisch, Julius-Maximilians-Univ. Würzburg (Germany)
Frank Würthner, Julius-Maximilians-Univ. Würzburg (Germany)
Klaus Meerholz, Univ. zu Köln (Germany)


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