Enhanced photocurrent and open-circuit voltage in a 3-layer cascade organic solar cell

Kjell Cnops; Barry P. Rand; David Cheyns; Paul Heremans

doi:10.1063/1.4757575

Enhanced photocurrent and open-circuit voltage in a 3-layer cascade organic solar cell

Kjell Cnops, Barry P. Rand, David Cheyns, Paul Heremans

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59 Scopus citations

Abstract

We demonstrate a cascade architecture for organic solar cells with two planar donor/acceptor (DA) heterojunctions operating in series. In a 3-layered structure, subphthalocyanine (SubPc) acts as an ambipolar interlayer between a tetracene (Tc) donor and a C ₆₀ acceptor. The Tc/SubPc and SubPc/C ₆₀ interfaces are both able to contribute to the photocurrent, which results in a short-circuit current in the 3-layer cascade cell larger than in any of the constituent bi-layer DA combinations. Furthermore, the open-circuit voltage is increased due to reduced recombination losses at the DA interface.

Original language	English (US)
Article number	143301
Journal	Applied Physics Letters
Volume	101
Issue number	14
DOIs	https://doi.org/10.1063/1.4757575
State	Published - Oct 1 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4757575

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abstract = "We demonstrate a cascade architecture for organic solar cells with two planar donor/acceptor (DA) heterojunctions operating in series. In a 3-layered structure, subphthalocyanine (SubPc) acts as an ambipolar interlayer between a tetracene (Tc) donor and a C 60 acceptor. The Tc/SubPc and SubPc/C 60 interfaces are both able to contribute to the photocurrent, which results in a short-circuit current in the 3-layer cascade cell larger than in any of the constituent bi-layer DA combinations. Furthermore, the open-circuit voltage is increased due to reduced recombination losses at the DA interface.",

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N2 - We demonstrate a cascade architecture for organic solar cells with two planar donor/acceptor (DA) heterojunctions operating in series. In a 3-layered structure, subphthalocyanine (SubPc) acts as an ambipolar interlayer between a tetracene (Tc) donor and a C 60 acceptor. The Tc/SubPc and SubPc/C 60 interfaces are both able to contribute to the photocurrent, which results in a short-circuit current in the 3-layer cascade cell larger than in any of the constituent bi-layer DA combinations. Furthermore, the open-circuit voltage is increased due to reduced recombination losses at the DA interface.

AB - We demonstrate a cascade architecture for organic solar cells with two planar donor/acceptor (DA) heterojunctions operating in series. In a 3-layered structure, subphthalocyanine (SubPc) acts as an ambipolar interlayer between a tetracene (Tc) donor and a C 60 acceptor. The Tc/SubPc and SubPc/C 60 interfaces are both able to contribute to the photocurrent, which results in a short-circuit current in the 3-layer cascade cell larger than in any of the constituent bi-layer DA combinations. Furthermore, the open-circuit voltage is increased due to reduced recombination losses at the DA interface.

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Enhanced photocurrent and open-circuit voltage in a 3-layer cascade organic solar cell

Abstract

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