GdAlO₃:Er³⁺, Yb³⁺ phosphors doped with Lu³⁺, Ga³⁺ ions were prepared via coprecipitation. The influences of substituting Ga³⁺ for Al³⁺ and substituting Lu³⁺ for Gd³⁺ on the structure and upconversion photoluminescence (UCPL) of the phosphors were studied. The experimental results show that the crystal textures did not change but the lattice parameters changed slightly via Lu³⁺, Ga³⁺ doping. This results in a decrease in the host phonon energy and a marked improvement in the green emission spectrum at 546nm. Moreover, the amounts of surface CO₂, , and OH^- species gradually decreased with Lu³⁺, Ga³⁺ doping. The combined effects led to an improvement in the UCPL efficiency with Ga³⁺, Lu³⁺ doping.

中文翻译：

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通过Ga3 +，Lu3 +掺杂改善GdAlO3：Er3 +，Yb3 +荧光粉的上转换光致发光

通过共沉淀制备了掺有Lu ³⁺，Ga ³⁺离子的GdAlO ₃：Er ³⁺，Yb ³⁺荧光粉。研究了Ga ³⁺代替Al ³⁺和Lu ³⁺代替Gd ³⁺对磷光体结构和上转换光致发光（UCPL）的影响。实验结果表明，通过掺杂Lu ³⁺，Ga ³⁺，晶体结构没有改变，但晶格参数略有改变。这导致主体声子能量的减少和546nm处绿色发射光谱的显着改善。而且，表面CO的量₂，，和OH ^-物种逐渐下降鲁³⁺，镓³⁺掺杂。组合的效应导致通过Ga ³⁺，Lu ³⁺掺杂提高UCPL效率。