The upconversion luminescence (UCL) of inorganic materials doped with activators and sensitizers has great application, but its luminescence intensity always impose restrictions on its development. Herein, an obvious enhancement in luminescence intensity of the WO₃: Yb³⁺, Ho³⁺ phosphor was realized through non-equivalence substitution of Bi³⁺ ions. The single pure phase of the synthesized WO₃: Yb³⁺, Ho³⁺, and Bi³⁺ phosphors has been confirmed by the XRD pattern. The morphology of phosphors and valence state of elements have been performed by SEM and XPS techniques. The sample on excitation with 980 nm performs forceful green emission and weak red emission at 543 nm and 662 nm, separately. The concentrations for doped Yb³⁺ and Ho³⁺ to obtain the optimal UCL in WO₃ are 8% and 1%, respectively. The optimized doping concentration for Bi³⁺ ions is 3%. Compared to samples without Bi³⁺ ions, the Yb³⁺/Ho³⁺/Bi³⁺ doped WO₃ obtains 1.59 and 2.33 times increase in emission intensity of green and red, respectively. We also explored the UCL mechanism and enhancement mechanism on the basis of the power dependency, the UCL and the downshift luminescence. These results based on Yb³⁺/Ho³⁺ UCL phosphors research is of great significance.

掺杂活化剂和敏化剂的无机材料的上转换发光（UCL）具有很大的应用前景，但其发光强度始终限制其发展。^{其中，通过Bi 3+}离子的非等价取代，实现了WO ₃ :Yb ³⁺、Ho ^{3+荧光粉发光强度的明显增强。}_{合成的WO 3}的单一纯相：Yb ³⁺、Ho ³⁺和Bi ³⁺荧光粉已通过 XRD 图案得到证实。通过SEM和XPS技术对荧光粉的形貌和元素的价态进行了表征。样品在 980 nm 激发下分别在 543 nm 和 662 nm 处发出强烈的绿光发射和微弱的红光发射。_{在WO 3}中获得最佳UCL的Yb ³⁺和Ho ³⁺掺杂浓度分别为8%和1%。^{Bi 3+}离子的最佳掺杂浓度为3%。与不含Bi ³⁺离子的样品相比，Yb ³⁺ /Ho ³⁺ /Bi ³⁺掺杂的WO ₃绿光和红光的发射强度分别提高了1.59倍和2.33倍。我们还基于功率依赖性、UCL和下移发光探索了UCL机制和增强机制。这些结果对基于Yb ³⁺ /Ho ³⁺ UCL荧光粉的研究具有重要意义。