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

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

Research output: Contribution to journalArticle

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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.

Original languageEnglish (US)
Article number143301
JournalApplied Physics Letters
Volume101
Issue number14
DOIs
StatePublished - Oct 1 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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