1 January 2011 Optimized solution-processed merocyanine:PCBM organic bulk heterojunction solar cell
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J. of Photonics for Energy, 1(1), 011101 (2011). doi:10.1117/1.3528043
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.
Nils M. Kronenberg, Hannah Bürckstümmer, Manuela Deppisch, Frank Würthner, Klaus Meerholz, "Optimized solution-processed merocyanine:PCBM organic bulk heterojunction solar cell," Journal of Photonics for Energy 1(1), 011101 (1 January 2011). http://dx.doi.org/10.1117/1.3528043
Submission: Received ; Accepted
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KEYWORDS
Solar cells

External quantum efficiency

Polymers

Molecules

Measurement devices

Absorption

Heterojunctions

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