Controlling Interdiffusion, Interfacial Composition, and Adhesion in Polymer Solar Cells
Journal article published in 2014 by
Stephanie R. Dupont,
Eszter Voroshazi,
Dennis Nordlund,
Koen Vandewal 
,
Reinhold H. Dauskardt
,
Reinhold H. Dauskardt
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Abstract
NEXAFS spectroscopy is used to precisely quantify the interfacial composition and P3HT chain orientation at the weak P3HT:PCBM/PEDOT:PSS interface. An increase of P3HT:PCBM and PEDOT:PSS interdiffusion with post electrode deposition annealing time and temperature is found to be the underlying mechanism for effectively improving the interlayer adhesion, which is essential for the commercial realization of organic photovoltaic devices.