Oxford PV has built the most efficient solar panel ever made. The solar cell can convert 25% of the sun’s energy it receives into electricity, compared to an industry average of between 15-20%. The Oxford University spinout credits the breakthrough to its perovskite-on-silicon tandem solar cells. Perovskite, a calcium titanium oxide mineral, is better at absorbing light than the crystalline silicon used exclusively in most panels and could revolutionise the industry. Designed in collaboration with the Fraunhofer Institute for Solar Energy Systems in Germany, the panels have a theoretical efficiency of 43%, although this has yet to be achieved in…
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