Figure 2From: Evaluating the use of blue phosphors in white LEDs: the case of Sr0.25Ba0.75Si2O2N2:Eu2+XRD measurement of the top layer. XRD measurement of the prepared green emitting top layer (bottom), compared with the calculated pattern for Ba3Si6O12N2 (middle) and Ba3Si6O9N4 (top)[27, 28].Back to article page