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Proceedings Paper

Flexible encapsulation for organic solar cells
Author(s): Christoph Lungenschmied; Gilles Dennler; Grzegorz Czeremuzskin; Mohamed Latrèche; Helmut Neugebauer; Niyazi Serdar Sariciftci
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Paper Abstract

Efficient organic photovoltaic devices show many interesting properties, but share a common drawback, namely their instability in atmosphere. We report on a shelf lifetime study of solar cells based on blends of two widely used polymeric semiconductors with 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C61 (PCBM), encapsulated in a new flexible and transparent poly(ethylene naphthalate) (PEN)-based ultra-high barrier material. The barrier coating is entirely fabricated by plasma enhanced chemical vapor deposition (PECVD). The conjugated polymers used are poly(2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylene-vinylene) (MDMO-PPV) and poly(3-hexyl)thiophene (P3HT). We have observed in this work that the encapsulation raises the shelf lifetime (50 % of the initial efficiency) from a few hours into the range beyond 3,000 hours for MDMO-PPV based devices. Using the more stable P3HT, the lifetime could be increased to approximately 6,000 hours, or more than eight months.

Paper Details

Date Published: 12 May 2006
PDF: 8 pages
Proc. SPIE 6197, Photonics for Solar Energy Systems, 619712 (12 May 2006); doi: 10.1117/12.662829
Show Author Affiliations
Christoph Lungenschmied, Johannes Kepler Univ. Linz (Austria)
Gilles Dennler, Johannes Kepler Univ. Linz (Austria)
Grzegorz Czeremuzskin, NOVA-PLASMA, Inc. (Canada)
Mohamed Latrèche, NOVA-PLASMA, Inc. (Canada)
Helmut Neugebauer, Johannes Kepler Univ. Linz (Austria)
Niyazi Serdar Sariciftci, Johannes Kepler Univ. Linz (Austria)

Published in SPIE Proceedings Vol. 6197:
Photonics for Solar Energy Systems
Andreas Gombert, Editor(s)

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