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K. Xerxes Steirer, Paul F. Ndione, N. Edwin Widjonarko, Matthew T. Lloyd, Jens Meyer, Erin L. Ratcliff, Antoine Kahn, Neal R. Armstrong, Calvin J. Curtis, David S. Ginley, Joseph J. Berry and Dana C. Olson Enhanced Efficiency in Plastic Solar Cells via Energy Matched Solution Processed NiOx Interlayers Advanced Energy Materials 1

Version of Record online: 18 JUL 2011 | DOI: 10.1002/aenm.201100234

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Enhanced efficiency and stability of a high performance organic solar cell is demonstrated when the hole collecting indium-tin oxide contact is modified with solution-processed nickel oxide and the high work-function contact is matched with the donor ionization potential. We use photoemission spectroscopy to characterize the band edge positions in the contact layer, a multilayer matrix optical model and a diode model to explain the improvements in contact quality in comparison to the hole-transport layer, polyethylene dioxythiophene:polystyrene sulfonate.

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