Case Western Reserve University physicists are developing ultra-thin optical coatings that could dramatically extend the life of solar panels
Strangi is leading a research group developing the new optical coatings, which are as thin as a few atomic layers. They can simultaneously transmit and reflect narrow-banded light with unparalleled vividness and purity of the colors.
Solar panels typically last about 20 to 30 years. Among the reasons: Sunlight provides energy but also heats the panel, reducing its short-term efficiency and long-term durability as it breaks down the materials. “But, until now, you couldn’t discriminate between the two, so to get the energy, you’d also have to accept the heat,” Strangi said. “Our coatings separate the two, leading a power generation increase in the short term and a sixfold increase in the lifetime of the panel.
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