With the help of the conventional sol-gel process, six different concentrations of CaLa_4-xSi₃O₁₃:xSm³⁺ (0.005 ≤ x ≤ 0.09) phosphors were fabricated. For all samples, by XRD crystal structure and luminescence features have been examined. Based on the diffuse reflectance spectrum, for CaLa_3.91Si₃O₁₃:0.09Sm³⁺ phosphor, both direct and indirect optical band gaps have been computed. Following measured PLE and PL spectra, we found that samples can be pumped efficiently by n-UV or blue LED chips for obtaining an intense orange emission at 598 nm (⁴G_5/2→⁶H_7/2) upon 403 nm (⁶H_5/2→⁴F_7/2) excitation. CIE color chromaticity coordinates (x, y) for both CaLa₄Si₃O₁₃:0.005 and 0.09 Sm³⁺ phosphors are computed following their corresponding emission spectra. Under 365 nm UV lamp, CaLa₄Si₃O₁₃:0.09 Sm³⁺ sample exhibits a bright orange color emission. In this work, it was found that the CaLa₄Si₃O₁₃:0.09 Sm³⁺ phosphor possesses potentiality for YAG:Ce³⁺ phosphor color rendering index (CRI) improvement in WLEDs, excited by the blue LED chips.

借助于常规的溶胶-凝胶工艺，制造了六种不同浓度的CaLa _4-x Si ₃ O ₁₃：xSm ³⁺（0.005≤x≤0.09 ）荧光粉。对于所有样品，已经通过XRD晶体结构和发光特征进行了检查。基于漫反射光谱，对于CaLa _3.91 Si ₃ O ₁₃：0.09Sm ³⁺荧光粉，已经计算了直接和间接光学带隙。根据测得的PLE和PL光谱，我们发现样品可以通过n-UV或蓝色LED芯片有效泵浦，以在598 nm（⁴ G _5/2 → ⁶ H₇₄₀₃）在403 nm（⁶ H _5/2 → ⁴ F _7/2）激发下。根据CaLa ₄ Si ₃ O ₁₃：0.005和0.09 Sm ³⁺磷光体的CIE颜色色度坐标（x，y），根据其相应的发射光谱进行计算。在365 nm紫外灯下，CaLa ₄ Si ₃ O ₁₃：0.09 Sm ³⁺样品呈现出亮橙色发射。在这项工作中，发现CaLa ₄ Si ₃ O ₁₃：0.09 Sm ³⁺荧光粉具有YAG：Ce ^3+的潜力。 蓝色LED芯片激发了WLED中荧光粉显色指数（CRI）的提高。