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Comparative indoor and outdoor degradation of organic photovoltaic cells via inter-laboratory collaboration

: Owens, C.; Ferguson, G.M.; Hermenau, M.; Voroshazi, E.; Galagan, Y.; Zimmermann, B.; Rösch, R.; Angamo, D.; Teran, G.; Uhrich, C.; Andriessen, R.; Hoppe, H.; Würfel, U.; Lira-Cantu, M.; Krebs, F.; Tanenbaum, D.

Institute of Electrical and Electronics Engineers -IEEE-; IEEE Photonics Society:
IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 : 14-19 June 2015, New Orleans, LA
Piscataway, NJ: IEEE, 2015
ISBN: 978-1-4799-7944-8
Photovoltaic Specialists Conference (PVSC) <42, 2015, New Orleans/La.>
Fraunhofer ISE ()

We report on the degradation of organic photovoltaic (OPV) cells in both indoor and outdoor environments. Eight different research groups contributed state of the art OPV cells to be studied at Pomona College. Power conversion efficiency, fill factor, and IV curves were collected at regular intervals over six to eight months. Similarly prepared devices were measured indoors, outdoors, and after dark storage. Device architectures are compared. Cells kept indoors performed better than outdoors due to the lack of temperature and humidity extremes. Encapsulated cells performed better due to the minimal oxidation. Some devices showed steady aging but many failed catastrophically due to corrosion of electrodes not active device layers. Degradation of cells kept in dark storage was minimal over periods up to one year.