Special Section on Organic Photovoltaics

Oxygen- and water-induced degradation of an inverted polymer solar cell: the barrier effect

[+] Author Affiliations
Morten V. Madsen

Technical University of Denmark, Risø National Laboratory for Sustainable Energy, Frederiksborgvej 399, DK-4000 Roskilde, Denmark

Kion Norrman

Technical University of Denmark, Risø National Laboratory for Sustainable Energy, Frederiksborgvej 399, DK-4000 Roskilde, Denmark

Frederik C. Krebs

Technical University of Denmark, Risø National Laboratory for Sustainable Energy, Frederiksborgvej 399, DK-4000 Roskilde, Denmark

J. Photon. Energy. 1(1), 011104 (February 07, 2011). doi:10.1117/1.3544010
History: Received August 30, 2010; Revised November 24, 2010; Accepted December 14, 2010; Published February 07, 2011; Online February 07, 2011
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The work focuses on the degradation of performance induced by both water and oxygen in an inverted geometry organic photovoltaic device with emphasis on the accumulated barrier effect of the layers comprising the layer stack. By studying the exchange of oxygen in the zinc oxide (ZnO) layer, the barrier effect is reported in both a dry oxygen atmosphere and an oxygen-free humid atmosphere. The devices under study are comprised of a bulk heterojunction formed by poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester sandwiched between a layer of zinc oxide (electron transporting layer) and a layer of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (hole transport layer) and the two electrodes indium tin oxide and silver. Time-of-flight secondary ion mass spectrometry is employed to characterize the accumulated barrier effect. A pronounced barrier effect is observed in the humid atmosphere, correlating well with a long observed lifetime in the same atmosphere.© 2011 Society of Photo-Optical Instrumentation Engineers.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Morten V. Madsen ; Kion Norrman and Frederik C. Krebs
"Oxygen- and water-induced degradation of an inverted polymer solar cell: the barrier effect", J. Photon. Energy. 1(1), 011104 (February 07, 2011). ; http://dx.doi.org/10.1117/1.3544010


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