Glass pyramid concentrator for solar cell applications

Stanford University scientists have built an optical concentrator that purportedly harvests more than 90% of the light that hits its surface.Researchers at Stanford University have created a glass pyramid optical concentrator that concentrates light on solar cells, regardless of the light incidence angle. "It's a completely passive system - it doesn't need energy to track the source or have any moving parts," said research coordinator Nina Vaidya. "Without optical focus that moves positions or need for tracking systems, concentrating light becomes much simpler." The AGILE (Axially Graded Index ...

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