Assertion: blue led | /r/HasProperty | 60%
Facets:
Source sentences:
text: The alloy systems related to GaAs, GaP, InP, and AlP were investigated searching for a composition range with direct bandgap, and in the 1990s, efficient red LEDs (60%) based on direct bandgap AlGaInP were developed and commercialized (Dupuis and Krames, 2008).