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 Mg₂Al₄Si₅O₁₈:Eu²⁺ ceramics as the phosphor wheel have been optimized in chemical compositions and texture orientation. The textured Mg₂Al₄Si₅O₁₈:Eu²⁺ ceramics have high transparency and spot limiting ability, accordingly, the ceramic wheel outputs 1,184 lm of ultra-bright red light under 50 W/mm² laser power density. Moreover, the red spectral utilization (over 600 nm) of textured Mg₂Al₄Si₅O₁₈:Eu²⁺ ceramics is 2.17 times that of traditional Y₃Al₅O₁₂:Ce³⁺ phosphor wheel. The red-emitting textured Mg₂Al₄Si₅O₁₈:Eu²⁺ cordierite ceramic herein enables an improved light-color saturation experience, and it is potential in the next-generation laser phosphor display applications.

Mn²⁺ doped garnet-type Na₂CaSn₂Ge₃O₁₂ phosphor was selected and studied due to its abundant chemical compositions and several crystallographic sites. Several ion substitution strategies including the chemical substitution of Na⁺/Sr²⁺/Ba²⁺ on Ca²⁺ sites and the anti-site occupation of Sn⁴⁺/Ge⁴⁺ were designed for regulating the different energy traps and promoting multimode luminescence properties like persistent luminescence, X-ray storage capacities and mechano-luminescence. In addition, the X-ray luminescence storage and mechano-luminescence properties of these materials as well as their applications on X-ray luminescence extension imaging and stress sensing were also investigated.