Spectrolab is a manufacturer of space solar cells and panels headquartered in Sylmar, California.
[1] In 2006 testing at the National Renewable Energy Laboratory demonstrated an efficiency of 40.7% using triple-junction solar cells developed by Spectrolab under concentration.
[citation needed] In 2013, testing at the National Renewable Energy Laboratory demonstrated an efficiency of 38.7% without concentration, a new world record at the time.
Spectrolab has recently geared its highly efficient space solar cell technology for terrestrial purposes with great success[citation needed] using concentrators.
[3] The company's ultra triple junction solar cells use exotic materials like germanium, InGaP2, and gallium arsenide to achieve their efficiency.