Phosphors with the compositions of x% Eu₂O₃-doped SrAl₂O₄ (x = 0.25, 0.5, 0.75, and 1.0, in mole ratio) were synthesized in air using solid state reaction method. From the SEM observations, we had found that the nano-cotton-filament-structured crystals were formed on the particle surfaces of all synthesized x% Eu₂O₃-doped SrAl₂O₄ powders, and their volume decreased with raising synthesis temperature. XRD patterns, TEM observations, and EDS analyses were used to analyze and confirm the compositions of the formed nano-cotton-filament-structured crystals, and the reaction sequences of Eu₂O₃-doped SrAl₂O₄ were well presented and proven in this study. When 260–265 nm were used as excitation wavelength, all the synthesized x% Eu₂O₃-doped SrAl₂O₄ phosphors would show photoluminescence emission intensity at three emission peaks with wavelengths of 590–592, 610–612, and 658 nm, which are respective corresponding to ⁵D₀ → ⁷F₁, ⁵D₀ → ⁷F₂, and ⁵D₀ → ⁷F₃ transitions of Eu³⁺ ions. The emission intensities of those characteristic peaks were apparently affected by the Eu₂O₃ concentration and synthesis temperature, and the concentration quench effect was also observed. The dominated emission light of all x% Eu₂O₃-doped SrAl₂O₄ phosphors was the transition of ⁵D₀ → ⁷F₁ (590–592 nm) peak, which was different from before research, and we would well discuss and explain the reason to cause this result.

使用固态反应方法在空气中合成具有x％Eu ₂ O ₃掺杂的SrAl ₂ O ₄（x = 0.25、0.5、0.75和1.0，摩尔比）组成的荧光粉。从SEM观察，我们发现在所有合成的x％Eu ₂ O ₃掺杂的SrAl ₂ O ₄粉末的颗粒表面上均形成了纳米棉丝结构的晶体，并且其体积随着合成温度的升高而减小。利用XRD图谱，TEM观察和EDS分析对形成的纳米棉丝结构晶体的组成和Eu ₂ O ₃的反应顺序进行了分析和确认。掺杂SrAl ₂ O _4的表现良好，并在本研究中得到证明。当使用260–265 nm作为激发波长时，所有合成的x％Eu ₂ O ₃掺杂的SrAl ₂ O ₄荧光粉在三个发射峰处分别显示出光致发光发射强度，波长分别为590–592、610–612和658 nm。 ，这是各自对应于⁵ d ₀  →  ⁷ ˚F ₁，⁵ d ₀  →  ⁷ ˚F ₂，和⁵ d ₀  →  ^7个˚F _3个的Eu的跃迁³⁺离子。Eu ₂ O ₃浓度和合成温度明显影响了这些特征峰的发射强度，并且还观察到了浓度猝灭效应。所有x％Eu ₂ O ₃掺杂的SrAl ₂ O ₄荧光粉的主要发射光是⁵ D ₀  →  ⁷ F ₁（590–592 nm）峰的跃迁，这与以前的研究不同，我们将进行讨论。并说明导致此结果的原因。