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Yes looks like GaAs: https://global.toyota/en/newsroom/corporate/28787347.html https://global.toyota/en/newsroom/corporate/28787347.html

• walrus01 7y ago
  If they can bring the cost down on that, for other types of panel manufacturing for non automotive markets, that would be pretty amazing. 22% monocrystalline silicon 156mm cells are a commodity now (such as to build a 60 or 72 cells panel with and sell it under $0.60/watt), but 30 to 34% GaAs cells are incredibly expensive. Until very recently GaAs triple junction cells have been so costly they are only used on satellites and other spacecraft.
  • realityman 7y ago
    If they can make them as cheap as silicon then obviously people will buy them instead, but it's not clear to me that panel efficiency is a relevant factor in the economics of commercial solar power.
    • kirrent 7y ago
      Interestingly it is, but more because of the associated costs. Extra panel efficiency means you need less land, less mounting hardware, and fewer installers for the same power solar farm.
  • Brakenshire 7y ago
    Perovskite solar panels are entering commercialisation at the moment, they will get 30% efficiency and above within the next few years.