Samarium doped yttrium zirconate transparent ceramics for highly transparent reddish-orange light emitting applications

Via solid state reaction, Sm3+ doped Y2Zr2O7 transparent ceramics with different samarium concentration were successfully prepared. Highest in-line transmittance of samples reaches over 75% both in visible and infrared region. The homogeneity and microstructure of powders and ceramics were investigated through XRD and SEM characterizations. The luminescence results show that under the excitation of ultraviolet (UV) and blue light source, strong red emission peaks were observed and corresponding energy-conversion mechanism were applied to explain the transition rules. Combined with the excellent optical properties and high temperature resistance, these results suggest that Sm3+ doped Y2Zr2O7 (YZO) transparent ceramics are promising novel red LED material for application such as illumination, digital display, etc.

Automated summary

Sm3+ doped Y2Zr2O7 transparent ceramics with different samarium concentration were successfully prepared via solid state reaction. The samples exhibited high in-line transmittance in both visible and infrared region, and strong red emission under UV and blue light excitation. The excellent optical properties and high temperature resistance make these ceramics promising for applications such as red LED illumination and digital display.