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Jang Jo, Jean-Rémi Pouliot, David Wynands, Samuel D. Collins, Jin Young Kim, Thanh Luan Nguyen, Han Young Woo, Yanming Sun, Mario Leclerc and Alan J. Heeger Enhanced Efficiency of Single and Tandem Organic Solar Cells Incorporating a Diketopyrrolopyrrole-Based Low-Bandgap Polymer by Utilizing Combined ZnO/Polyelectrolyte Electron-Transport Layers Advanced Materials 25

Version of Record online: 12 JUL 2013 | DOI: 10.1002/adma.201301288

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Power conversion efficiency up to 8.6% is achieved for a solution-processed tandem solar cell based on a diketopyrrolopyrrole-containing polymer as the low-bandgap material after using a thin polyelectrolyte layer to modify the electron-transport ZnO layers, indicating that interfacial engineering is a useful approach to further enhancing the efficiency of tandem organic solar cells.

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