Assertion: junction solar cell | /r/HasAspect | theoretical efficiencies
Facets:
value: over 45 percent
type: OTHER
value: according to the department of energy
type: OTHER
Source sentences:
text: According to the Department of Energy, multi-junction solar cells with three junctions have theoretical efficiencies over 45 percent, while single-junction cells top out at about 33.5 percent.