Figure 8
From: Evaluating the use of blue phosphors in white LEDs: the case of Sr0.25Ba0.75Si2O2N2:Eu2+
Simulated color quality and luminous efficacy of white LEDs. Influence on color quality scale (CQS, left) and luminous efficacy of radiation (LER, right) of the spectral shape of the blue component in a three-band LED. The approximate location of the Sr0.25Ba0.75Si2O2N2:Eu2+ phosphor is indicated by a circle, the location of the standard blue phosphor BaMgAl10O17:Eu2+ is indicated by a diamond and the locations of blue pumping LEDs are indicated by the oval.