Lu Juan, Su Chia-Ching, Hong Cheng-Shong, Peng Guoxiang, Yang Cheng-Fu
Department of Creative Design, Dongguan City University, Dongguan 523000, China.
Department of Electronic Engineering, National Kaohsiung Normal University, Kaohsiung 811, Taiwan.
Materials (Basel). 2023 Mar 1;16(5):2032. doi: 10.3390/ma16052032.
Previously, there were almost no relevant studies on developing the optimal CaMgSiO:yEu phosphor composition for its finest optical properties. This study employs two steps to determine the optimal composition for CaMgSiO:yEu phosphors. First, CaMgSiO:yEu (y = 0.015, 0.020, 0.025, 0.030, 0.035) was used as the primary composition of specimens synthesised in a reducing atmosphere of 95% N + 5% H to investigate the effect of Eu ions on the photoluminescence properties of each variant. The emission intensities of the entire photoluminescence excitation (PLE) and photoluminescence (PL) emission spectra of the CaMgSiO:yEu phosphors initially increased as the concentration of the Eu ions increased, peaking at y = 0.025. The cause of the variations across the entire PLE and PL spectra of all five CaMgSiO:yEu phosphors was investigated. Because the CaMgSiO:0.025Eu phosphor had the highest PLE and PL emission intensities, in the next step, CaMgSiO:0.025Eu (x = 0.5, 0.75, 1.0, 1.25) was used as the primary composition to investigate the effect on the photoluminescence properties when the CaO content varied. We also show that the Ca content has an apparent effect on the photoluminescence properties of CaMgSiO:0.025Eu phosphors, and the optimal phosphor composition is Ca.Mg.SiO:0.025Eu because it has the largest PLE and PL values. X-ray diffraction (XRD) analyses of CaMgSiO:0.025Eu phosphors were performed to identify the factors responsible for this outcome.
此前，几乎没有关于开发具有最佳光学性能的CaMgSiO:yEu磷光体组合物的相关研究。本研究采用两个步骤来确定CaMgSiO:yEu磷光体的最佳组合物。首先，将CaMgSiO:yEu（y = 0.015、0.020、0.025、0.030、0.035）用作在95% N + 5% H的还原气氛中合成的样品的主要组合物，以研究Eu离子对每个变体的光致发光性能的影响。CaMgSiO:yEu磷光体的整个光致发光激发（PLE）和光致发光（PL）发射光谱的发射强度最初随着Eu离子浓度的增加而增加，在y = 0.025时达到峰值。研究了所有五种CaMgSiO:yEu磷光体在整个PLE和PL光谱上变化的原因。由于CaMgSiO:0.025Eu磷光体具有最高的PLE和PL发射强度，在下一步中，将CaMgSiO:0.025Eu（x = 0.5、0.75、1.0、1.25）用作主要组合物，以研究当CaO含量变化时对光致发光性能的影响。我们还表明，Ca含量对CaMgSiO:0.0
