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Proceedings Paper

Efficient and long-term stable organic vacuum deposited tandem solar cells
Author(s): Christian L. Uhrich; Gregor Schwartz; Bert Maennig; Wolf M. Gnehr; Stefan Sonntag; Oliver Erfurth; Eginhard Wollrab; Karsten Walzer; Jan Foerster; Andre Weiss; Olga Tsaryova; Karl Leo; Moritz K. Riede; Martin Pfeiffer
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Paper Abstract

We report on the latest progress in the field of organic p-i-n tandem solar cells. The external quantum efficiencies of a tandem solar cell with two complementary absorbing bulk heterojunctions with an efficiency of 6.07% (certified by Fraunhofer ISE) with an active area of about 2cm2 is analyzed. These solar cells are extremely stable: a reduction of only 3% of its initial power conversion efficiency was measured when stored at 85°C for 5000 hours. The solar cell does not show any reduction in efficiency when stored under continuous illumination of a tungsten lamp corresponding to 1.5 suns for 5000 hours. Furthermore, we present the latest results on optimized tandem solar cells showing a power conversion efficiency of 7.66 % (certified by Fraunhofer ISE, active area of 1.1cm2).

Paper Details

Date Published: 19 May 2010
PDF: 8 pages
Proc. SPIE 7722, Organic Photonics IV, 77220G (19 May 2010); doi: 10.1117/12.855088
Show Author Affiliations
Christian L. Uhrich, heliatek GmbH (Germany)
Gregor Schwartz, heliatek GmbH (Germany)
Bert Maennig, heliatek GmbH (Germany)
Wolf M. Gnehr, heliatek GmbH (Germany)
Stefan Sonntag, heliatek GmbH (Germany)
Oliver Erfurth, heliatek GmbH (Germany)
Eginhard Wollrab, heliatek GmbH (Germany)
Karsten Walzer, heliatek GmbH (Germany)
Jan Foerster, heliatek GmbH (Germany)
Andre Weiss, heliatek GmbH (Germany)
Olga Tsaryova, heliatek GmbH (Germany)
Karl Leo, Technische Univ. Dresden (Germany)
Moritz K. Riede, Technische Univ. Dresden (Germany)
Martin Pfeiffer, heliatek GmbH (Germany)

Published in SPIE Proceedings Vol. 7722:
Organic Photonics IV
Paul L. Heremans; Reinder Coehoorn; Chihaya Adachi, Editor(s)

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