Organic tandem solar cells with complementary absorbing layers and a high open-circuit voltage

D. Cheyns, B. P. Rand, P. Heremans

Research output: Contribution to journalArticle

95 Scopus citations

Abstract

Tandem organic solar cells with peak conversion efficiencies (η) of 5.15% are demonstrated. This is achieved by stacking two different planar heterojunction devices, each with a high open-circuit voltage (Voc). The phthalocyanine based donor materials in the employed subcells possess complementary absorption, a quality of critical importance to optimize photocurrent in a series connected tandem cell. The tandem structure produces Voc values of nearly 2 V, while fill factor remains above 60%. The measured corresponds to a 40% increase compared to of the optimal single cells.

Original languageEnglish (US)
Article number033301
JournalApplied Physics Letters
Volume97
Issue number3
DOIs
StatePublished - Jul 19 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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