Preparation of translucent YAG:Ce ceramics by reaction sintering

Fabrication and optical studies of transparent Tm, Ho:YAG ceramics

“…The weight loss of Si 3 N 4 balls during milling is around 0.03 wt.%. The earlier works proved that Si 3 N 4 contamination due to milling does not affect transparency; however, it can slightly influence the luminescence spectra [35,36].…”

Layered Ceramic Phosphors Based on CaAlSiN3:Eu and YAG:Ce for White Light‐Emitting Diodes

“…In order to counteract this, constrained sintering of conversion phosphor multilayers comprising YAG:Ce and CaAlSiN 3 :Eu were investigated as a further approach. According to prior art techniques, YAG:Ce ceramic platelets can be densely sintered for optical applications, so that dense YAG:Ce ceramic platelets can be used as rigid substrates for sintering of thin CaAlSiN 3 :Eu layers produced on top of the YAG:Ce ceramic platelets.…”

“…Ceramic converters based on oxide phosphors, mainly on green‐emitting YAG:Ce garnets are well‐known. They are generally produced by solid‐state sintering under vacuum starting from various precursors, or by vacuum sintering of phosphor powders …”

“…10 Ceramic converters based on oxide phosphors, mainly on green-emitting YAG:Ce garnets are well-known. They are generally produced by solid-state sintering under vacuum starting from various precursors, [11][12][13] or by vacuum sintering of phosphor powders. 14 To obtain high-quality warm-white light, blue light-excited diodes with YAG:Ce converters require the addition of red emission phosphors, such as the above described CaAlSiN 3 : Eu.…”