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| Separating electrons and holes: A prerequisite for |
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| photovoltaic applications |
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|
|
| Recombination
of P+ and P- |
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| reduces device
efficiency |
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|
|
|
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|
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| Nearly
100% electron transfer to the C60 |
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| Because
of bipolaron BP2+ formation |
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| minimal
back transfer |
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| Polymer
has good hole mobilities |
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| Design
of interface and electron transport |
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| are bottle necks |
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