Journal
ADVANCED MATERIALS
Volume 16, Issue 18, Pages 1640-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200305766
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Polymer blend photovoltaic devices (see Figure) are investigated and the characteristic electron and hole lengths estimated. It is found that for a polymer film exhibiting fine-scale phase separation, only charges generated close to the electrode can be collected. The open-circuit voltage for polymer blend devices is found to be lower than that for bilayer devices, a result of the direct paths from cathode to anode within each blend component.
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