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Organic Solar Cells: The Technology and the Future

Organic Solar Cells: The Technology and the Future. Diana Snelling 11-19-07 ChE 384. Performance Comparison. Lawrence Kazmerski, Don Gwinner, Al Hicks, 11/7/07, United States Department of Energy. Best Research-Cell Efficiencies. Traditional Cells vs. Organic. 100nm. 100 nm. 100 nm.

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Organic Solar Cells: The Technology and the Future

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  1. Organic Solar Cells:The Technology and the Future Diana Snelling 11-19-07 ChE 384

  2. Performance Comparison Lawrence Kazmerski, Don Gwinner, Al Hicks, 11/7/07, United States Department of Energy. Best Research-Cell Efficiencies.

  3. Traditional Cells vs. Organic 100nm 100 nm 100 nm Bulk Heterojunction Benanti, Travis L, and D Venkataraman. "Organic solar cells: An overview focusing on active layer morphology." Photosynthesis Research 87 (Apr. 2005): 73-81.

  4. Organic Semiconductors • Chemistry of polymers is well understood • Chemically tunable • Band gap • Valence and conduction energies • Charge transport • Solubility • Structural properties • The variety of organic materials that can be synthesized greatly overwhelms the variety of inorganic materials possible

  5. Organic Materials for PV • Intrinsic property: donor or acceptor • Extrinisic property: p or n doped by impurities • Kinetic property: efficient electron or hole transport determined by orbital overlap a – c are good donors d & f are good acceptors

  6. Organic Cell Structure J.-M. Nunzi. “Organic photovoltaic materials and devices.” C. R. Physique 3 (2002): 523-542.

  7. Inexpensive Lightweight Disposable Flexible Environmental Niche applications Efficiency Degradation Competition with existing Si industry Power farms Advantages and Challenges

  8. Conclusions • Great research opportunity • POTENTIAL • Applications • Cost • Organic solar cells are probably not a solution for our large-scale future energy problems

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