Polymers in Solar Cells Joshua Hufford Bryan Orellana Yunchao Li McKay Barnett Sameh Mehrez http://static.technorati.com/10/04/14/11757/solar-panels.jpg Polymer Solar Cells First Generation Single crystal silicon wafers Second Generation Polycrystalline silicon Amorphous silicon Single Crystal Silicon Wafer http://www.goldmine-elec-products.com/images/G2243B.jpg Third Generation Nanocrystal solar cells Polymer solar cells Fourth Generation Hybrid - inorganic crystals within a polymer matrix Polycrystalline Silicon http://en.wikipedia.org/wiki/Solar_cell State-of-the-Art! Use of polymers (i.e. PPV – Polyphenylene Vinylenes) with nanoparticles mixed together to make a single multispectrum layer Inorganic hybrids that are used as the nano particles: CdSe Titania (Titanium oxide) This new form creates a more effective transport for charges State-of-the-Art! Significant advances in hybrid solar cells have followed the development of elongated nanocrystal rodes and branched nano crystals Increase surface area Decreases resistance Incorporation of larger nanostructures into polymers require optimization of blend morphology using solvent mixtures Mayer, A. This makes it easy to potentially make large rolls of thin, flexible polymer solar cells Where can you find Solar Cells? Solar cells have many market opportunities Solar cells in space: sustainable, reliable, and an economical source of power The international space station; four sets of arrays, each one has 250,000 solar cells that can power a small neighborhood. Solar power plants in the Mojave Desert 9 plants provides more power than what Saudi Arabia produces from oil every day Cleaner, and more sustainable compared to oil. Image taken from www.space.com Where can you find Solar Cells? The first solar powered airplane Flew for 26 continuous hours. It was powered by 12,000 solar cells on its carbon fiber wings. Powered solar vehicles Residential roof solar panels. Roadmap: Where are polymer solar cells going? Converting some of the heat for an overall solar cell composite More efficient and cheaper Based on polymer solar cell and heterojunction technology Roadmap: Where are polymer solar cells going? Future advances will rely on new nanocrystals, such as titania, to replace fullerene derivatives. Potential to enhance light absorption and further improve charge transport. Increase efficiency while getting away from all organic solar cell polymers. Conclusion New innovations in polymeric materials and other nanoparticles are allowing for cheaper solar cells Continued research will lead to more efficient cells Cost effective, sustainable, ease of production, long lasting are key traits that make this technology increasingly plausible as a green replacement from present energy resources. References: https://scifinder.cas.org/scifinder/view/scifinder/s cifinderExplore.jsf http://en.wikipedia.org/wiki/Solar_cell Mayer, A., S. Scully, B. Hardin, M. Rowell, and M. Mcgehee. "Polymer-based Solar Cells." Materials Today 10.11 (2007): 28-33. Print.