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I. T. Sachs-Quintana, Thomas Heumüller, William R. Mateker, Darian E. Orozco, Rongrong Cheacharoen, Sean Sweetnam, Christoph J. Brabec and Michael D. McGehee Electron Barrier Formation at the Organic-Back Contact Interface is the First Step in Thermal Degradation of Polymer Solar Cells Advanced Functional Materials 24

Version of Record online: 24 MAR 2014 | DOI: 10.1002/adfm.201304166

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Thermal degradation near operating temperatures occurs at the metal-organic interface if the polymer T g is near the operating temperature. The degradation is reversed by peeling off and reapplying the metal electrode. X-ray photoelectron spectroscopy measurements reveal a larger amount of polymer adheres to electrodes peeled from aged devices than electrodes peeled from fresh devices. Using an inverted device suppresses degradation.

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