Thick‐film phosphor‐in‐glasses (PiGs) were fabricated via a screen‐printing method with various phosphor layer structures, to compose a white light emitting diode (LED). Green (Lu₃Al₅O₁₂:Ce³⁺) and red (CaAlSiN₃:Eu²⁺) phosphors were mixed, layered, and patterned on a glass substrate. The chromaticity of each structured PiG was tuned to achieve a white LED by varying phosphor content and thickness. The emission spectra and the related various color conversion properties, including color coordinates, correlated color temperature (CCT), color rendering index (CRI), luminous efficacy (LE) and the color gamut of the mounted PiGs with different phosphor layer structures were examined and compared. Time‐resolved photoluminescence (TRPL) measurements of the white LEDs with various phosphor layer structural designs were also obtained and compared. It was observed that spectral variation depended on the PiG layer structure. A proper PiG layer structural design was discussed for practical applications.

中文翻译：

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各种厚膜玻璃荧光粉的颜色转换特性取决于白色LED的结构设计

厚膜玻璃荧光粉（PiG）是通过丝网印刷方法制造的，具有各种荧光粉层结构，以构成白色发光二极管（LED）。绿色（Lu ₃ Al ₅ O ₁₂：Ce ³⁺）和红色（CaAlSiN ₃：Eu ²⁺将磷光体混合，分层并在玻璃基板上构图。通过改变磷光体的含量和厚度，可以调整每个结构化PiG的色度，从而获得白色LED。检查了发射光谱和相关的各种颜色转换特性，包括色坐标，相关色温（CCT），显色指数（CRI），发光效率（LE）和已安装的具有不同磷光体层结构的PiG的色域，并比较。还获得并比较了具有各种荧光粉层结构设计的白色LED的时间分辨光致发光（TRPL）测量结果。观察到光谱变化取决于PiG层结构。讨论了适合实际应用的合适的PiG层结构设计。