A 100km2 area covered with 10% efficient solar cells can produce enough electricity to satisfy the national requirement. Unfortunately, the total area of cells produced and installed to date is 1,000 times smaller than needed. Despite the high annual growth rate of the photovoltaic (PV) industry, current manufacturing methods face a scalability barrier that makes fulfilling demand unlikely in the next 20 years. Manufacturing of organic pigment-based solar cells could be expanded. (source: spie.org)
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