Guoqiang Ren, Cody W. Schlenker, Eilaf Ahmed, Selvam Subramaniyan, Selina Olthof, Antoine Kahn, David S. Ginger and Samson A. Jenekhe Photoinduced Hole Transfer Becomes Suppressed with Diminished Driving Force in Polymer-Fullerene Solar Cells While Electron Transfer Remains Active Advanced Functional Materials 23
The effect of modulating the driving force for charge separation via photoinduced hole transfer from fullerene excitons in polymer:fullerene solar cells is measured. Poor photoinduced hole transfer is identified as a major limiting factor for photocurrent generation in indene-C60-bis-adduct devices. These results provide a guide to materials design and device engineering for highly efficient organic solar cells.
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