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Silicon-based solar cells are the most widely used form of solid-state energy conversion devices. These devices use commonly available silicon manufacturing techniques and achieve conversion efficiencies of between 11% and 16%. Even the best of these devices are still four to twelve times more expensive than fossil fuel-based electric generation on a per watt basis. The promise of solar-based energy conversion has been unfilled over the past several decades, due to high costs of the devices and low efficiencies. Solar cells using EviDots overcome these obstacles by optimizing the optical and electrical characteristics and using low-cost materials and inexpensive production methods that avoid expensive substrates and micro-fabrication. We project that the per watt costs of our EviDots-based devices would drop by a factor of 2 to 4, with the promise of increasing the efficiencies over 20% depending on the design of the cell. If these efficiencies are obtained, solar cells will become price competitive with fossil fuel electric generation.
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