Special Section on Organic Photovoltaics

Optimized solution-processed merocyanine:PCBM organic bulk heterojunction solar cell

[+] Author Affiliations
Nils M. Kronenberg, Klaus Meerholz

Universität zu Köln, Department für Chemie, Luxemburger Str. 116, 50939 Köln, Germany

Hannah Bürckstümmer, Manuela Deppisch, Frank Würthner

Universität Würzburg, Institut für Organische Chemie and Röntgen Research Center for Complex Material Systems, Am Hubland, 97074 Würzburg, Germany

J. Photon. Energy. 1(1), 011101 (January 04, 2011). doi:10.1117/1.3528043
History: Received June 29, 2010; Revised November 09, 2010; Accepted November 15, 2010; Published January 04, 2011; Online January 04, 2011
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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.

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© 2011 Society of Photo-Optical Instrumentation Engineers

Citation

Nils M. Kronenberg ; Hannah Bürckstümmer ; Manuela Deppisch ; Frank Würthner and Klaus Meerholz
"Optimized solution-processed merocyanine:PCBM organic bulk heterojunction solar cell", J. Photon. Energy. 1(1), 011101 (January 04, 2011). ; http://dx.doi.org/10.1117/1.3528043


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