Flexible encapsulation for organic solar cells

Christoph Lungenschmied; Gilles Dennler; Grzegorz Czeremuzskin; Mohamed Latrèche; Helmut Neugebauer; Niyazi Serdar Sariciftci

doi:10.1117/12.662829

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12 May 2006 Flexible encapsulation for organic solar cells

Christoph Lungenschmied, Gilles Dennler, Grzegorz Czeremuzskin, Mohamed Latrèche, Helmut Neugebauer, Niyazi Serdar Sariciftci

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Proceedings Volume 6197, Photonics for Solar Energy Systems; 619712 (2006) https://doi.org/10.1117/12.662829
Event: SPIE Photonics Europe, 2006, Strasbourg, France

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.

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Christoph Lungenschmied, Gilles Dennler, Grzegorz Czeremuzskin, Mohamed Latrèche, Helmut Neugebauer, and Niyazi Serdar Sariciftci "Flexible encapsulation for organic solar cells", Proc. SPIE 6197, Photonics for Solar Energy Systems, 619712 (12 May 2006); https://doi.org/10.1117/12.662829

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