Did you know that crystals form the basis for the
penetrating icy blue glare of car headlights and could be fundamental to the
future in solar energy technology?
Crystals are at the heart of diodes. Not the kind you might
find in quartz, formed naturally, but manufactured to form alloys, such as
indium gallium nitride or InGaN. This alloy forms the light emitting region of
LEDs, for illumination in the visible range, and of laser diodes (LDs), in the
blue-UV range.