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Ilan Gur , Neil A. Fromer , Chih -Ping Chen , Antonios G. Kanaras , and,

Hybrid Solar Cells with Prescribed Nanoscale Morphologies Based on Hyperbranched Semiconductor Nanocrystals. Ilan Gur , Neil A. Fromer , Chih -Ping Chen , Antonios G. Kanaras , and, A . Paul Alivisatos. Kyle Braam , EE235 Presentation, 3/2/09. Donor/Acceptor H eterojunction.

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Ilan Gur , Neil A. Fromer , Chih -Ping Chen , Antonios G. Kanaras , and,

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  1. Hybrid Solar Cells with PrescribedNanoscale Morphologies Based onHyperbranched SemiconductorNanocrystals IlanGur, Neil A. Fromer, Chih-Ping Chen, Antonios G. Kanaras, and, A. Paul Alivisatos Kyle Braam, EE235 Presentation, 3/2/09

  2. Donor/Acceptor Heterojunction Organic Solar Cells • Donor Materials • CuPc • P3HT • Acceptor Materials • Perylene • C60 • Fullerene derviatives (PCBM) This Paper: P3HT/CdSe Solar Cell

  3. Solar Cell Structure

  4. CdSe/P3HT Solar Cell P3HT Polymer Matrix Branched CdSeNanoparticles TEM OF CdSeNanoparticle Scale bar: 100 nm

  5. Hyperbranched vs. Rod

  6. Results: IV Properties

  7. Results: Best Solar Cell Highest efficiency device: 2.18% P3HT Polymer Matrix CdSeNanoparticle • Polymer unable to fully penetrate the branches of the individual nanocrystals • More open branching networks • Size of nanoparticles

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