Assertion: indirect bandgap semiconductor | /r/CapableOf | work as absorber
Facets:
value: reasonably well
type: DEGREE
value: as with silicon photovoltaics
type: OTHER
Source sentences:
text: A phonon is required in the process of absorption or emission in the case of an indirect bandgap semiconductor, so indirect bandgap semiconductors are usually very inefficient emitters, although they work reasonably well as absorbers also (as with silicon photovoltaics).