“…7 Additionally, the latter exhibits better color stability because its color is solely determined by the emission light of phosphors. [11][12][13][14] For example, Wei et al encapsulated multi-color phosphors, including Na 2 HfSi 2 O 7 :Eu 2+ , (Sr, Ba) 2 SiO 4 : Eu 2+ and CaAlSiN 3 :Eu 2+ based on a near-ultraviolet chip, resulting in a WLED chip with a R a of 92.6 and a CCT of 4617 K. 15 However, different degradation rates of multiphase phosphors during long-term operation usually produce color aberrations, and consequently decrease the lighting quality of pc-WLEDs. 16,17 In other words, it is difficult to control the color balance for multi phosphor mixtures because of their different thermal stability properties, which is an undesirable problem.…”