Categorized | Renewable energy, Solar power

Self-cooling PV cells use layer of silica glass

self-cooling-solar-cells

Stanford researchers have developed a way to keep solar photovoltaic cells cooler, even in baking temperatures. If the cells get too hot, efficiency drops as does the lifetime of the cells. Adding pyramid-shaped layer of silica glass allows the cells to cool on their own, avoiding the need for water or wind for cooling.

“The goal was to lower the operating temperature of the solar cell while maintaining its solar absorption,” Fan said. “We were quite pleased to see that while the flat layer of silica provided some passive cooling, the patterned layer of silica considerably outperforms the 5 mm-thick uniform silica design and has nearly identical performance as the ideal scheme.”

Thus, efficiency and cell lifetimes both increase, hugely improving productivity.

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