white light

  • Toshiba develops UV LED with extremely white lighting

    Toshiba develops UV LED with extremely white lighting

    Toshiba Japan has developed an LED that emits UV light with 50% higher efficiency than conventional LEDs. The problem with existing white LEDs is that they are made by coating phosphors on blue LEDs and too weak to light bigger areas such as parking lots or supermarkets. Toshiba says their prototype UV LED is made by placing a layer of aluminum nitride between the sapphire substrate and… Read More