Assertion: solar cell's efficiency | /r/HasProperty | high
Facets:
value: necessarily
type: DEGREE
Source sentences:
text: Therefore, the efficiency of the energy conversion doesn’t necessarily need to be as high as the efficiency of the conventional cell.
text: A dual-junction solar cell with a band gap of 1.6–1.8 eV as a top cell can reduce thermalization loss, produce a high external radiative efficiency and achieve theoretical efficiencies over 45%.