Realizing a high color rendering index (CRI) in Ce:LuAG transparent ceramics (TCs) with desired thermal stability is essential to their applications in white LEDs/LDs as color converters. In this study, based on the scheme of configuring the red component by Cr³⁺ doping, an efficient spectral regulation was realized in Ce,Cr:LuAG TCs. A unilateral shift phenomenon could be observed in both photoluminescence (PL) and photoluminescence excitation (PLE) spectra of TCs. By constructing TC-based white LED/LD devices in a remote excitation mode, luminescence properties of Ce,Cr:LuAG TCs were systematically investigated. The CRI values of Ce:LuAG TC based white LEDs could be increased by a magnitude of 46.2%. Particularly, by combining the as fabricated Ce,Cr:LuAG TCs with a 0.5 at% Ce:YAG TC, surprising CRI values of 88 and 85.5 were obtained in TC based white LEDs and LDs, respectively. Therefore, Ce,Cr:LuAG TC is a highly promising color convertor for high-power white LEDs/LDs applied in general lighting and displaying.

在具有所需热稳定性的 Ce:LuAG 透明陶瓷 (TC) 中实现高显色指数 (CRI) 对于它们作为颜色转换器在白光 LED/LD 中的应用至关重要。本研究基于 Cr ³⁺配置红色成分的方案掺杂，在 Ce,Cr:LuAG TCs 中实现了有效的光谱调节。在 TC 的光致发光 (PL) 和光致发光激发 (PLE) 光谱中都可以观察到单边位移现象。通过在远程激发模式下构建基于 TC 的白光 LED/LD 器件，系统地研究了 Ce,Cr:LuAG TCs 的发光特性。基于 Ce:LuAG TC 的白光 LED 的 CRI 值可以提高 46.2%。特别是，通过将制造的 Ce,Cr:LuAG TC 与 0.5 at% Ce:YAG TC 相结合，分别在基于 TC 的白光 LED 和 LD 中获得了令人惊讶的 88 和 85.5 的 CRI 值。因此，Ce,Cr:LuAG TC 是一种极具前景的颜色转换器，适用于应用于一般照明和显示的大功率白光 LED/LD。