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The Columbia EFRC - Lenfest Center for Sustainable Energy ...

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Organic Photovoltaics: Plastic Photocells.<br />

donor-acceptor junction<br />

polymer donor<br />

MDMO-PPV<br />

Opportunities<br />

inexpensive materials, con<strong>for</strong>mal coating, self-assembling fabrication,<br />

wide choice of molecular structures, “cheap solar paint”<br />

Challenges<br />

low efficiency (2-5%), high defect density, low mobility, full<br />

absorption spectrum, nanostructured architecture<br />

Source: George Crabtree, Solar <strong>Energy</strong>Challenges and Opportunities<br />

(<br />

O<br />

O<br />

) n<br />

fullerene acceptor<br />

PCBM<br />

O<br />

OMe<br />

file: <strong>Lenfest</strong> Symp 05-04-10 rev b.ppt Page 8

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