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20 April 2006 How stable are polymer:PCBM bulk heterojunction solar cells?
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This paper investigates the thermal stability of organic bulk heterojunction solar cells, with a special focus on the thermal ageing of both photovoltaic parameters and morphology of the active layer. The photovoltaic parameters of a set of bulk heterojunction solar cells were determined by IV-characterization and their bulk morphology was investigated with transmission electron microscopy (TEM). A link could be made between the degradation of the short circuit current under a thermal treatment and the corresponding change in bulk morphology. A possible improvement of the thermal stability of bulk heterojunction solar cells is presented through the use of a polymer with higher glass transition temperature.
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S. Bertho, I. Haeldermans, A. Swinnen, J. D'Haen, L. Lutsen, J. V. Manca, and D. J. M. Vanderzande "How stable are polymer:PCBM bulk heterojunction solar cells?", Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 619225 (20 April 2006);


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