Si/al order and texture orientation optimization of red-emitting Mg2Al4Si5O18:Eu2+ ceramics for laser phosphor display

Laser phosphor display technology plays an important role in advanced display projection; however, it is a challenge in maintaining excellent color accuracy under high brightness due to the lack of red spectrum. Here, red-emitting Mg 2 Al 4 Si 5 O 18 :Eu 2+ ceramics as the phosphor wheel have been optimized in chemical compositions and texture orientation. The textured Mg 2 Al 4 Si 5 O 18 :Eu 2+ ceramics have high transparency and spot limiting ability, accordingly, the ceramic wheel outputs 1184 l m of ultra-bright red light under 50W·mm −2 laser power density. Moreover, the red spectral utilization (＞600 nm) of textured Mg 2 Al 4 Si 5 O 18 :Eu 2+ ceramics is 2.17 times that of traditional Y 3 Al 5 O 12 :Ce 3+ phosphor wheel. The red-emitting textured Mg 2 Al 4 Si 5 O 18 :Eu 2+ cordierite ceramic herein enables an improved light-color saturation experience, and it is potential in the next-generation laser phosphor display applications.