Rare-earth-doped upconverison luminescent (UCL) materials have wide application prospects in the field of nanoptoelectronics technology. However, achieving highly efficient UCL materials is still a big challenge due to the serious nonradiative energy loss in the host materials. In this research, Gd₂(WO₄)₃: Yb³⁺, Er³⁺ inverse opal photonic crystals (IOPCs) were prepared using a polymethylmethacrylate (PMMA) template-assisted method, and the effects of modulations of the IOPC structure on UC emission properties of Er³⁺ were investigated systemically. As a result, the emission intensity of ²H_11/2-⁴I_15/2 in IOPC was found to be suppressed 37.4%, and the radiative lifetimes of ⁴S_3/2-⁴I_15/2 were prolonged 1.55 times. The effects of the doping concentration on the reciprocal of fluorescence lifetimes of ⁴S_3/2-⁴I_15/2 between the IOPC and the reference (REF) samples showed that the cross-energy transfer (CET) rate and the electronic transition rate were greatly inhibited, which could be due to the effect of the modulation of the effective index on the radiative transition rate and on the decrease of nonradiative transition rate caused by periodic thin-walled structure of IOPC. The power-dependent UC emission properties validated the supposition that the IOPC structure could be effectively suppressed the local thermal effect and thermal quenching. This research presents a further step in the exploration of the new kind of UCL materials with high luminous efficiency.

稀土掺杂上泛发光（UCL）材料在纳米光电技术领域具有广阔的应用前景。然而，由于主体材料中严重的非辐射能量损失，获得高效的UCL材料仍然是一个巨大的挑战。在这项研究中，使用聚甲基丙烯酸甲酯（PMMA）模板辅助方法制备了Gd ₂（WO ₄）₃：Yb ³⁺，Er ³⁺反蛋白石光子晶体（IOPC），以及IOPC结构的调制对UC的影响系统地研究了Er ^3+的发射性质。结果，发射强度为² H ₁₁ / ^2-4 I_15/2在IOPC被发现能够抑制37.4％，和的辐射寿命⁴ š _3/2 - ⁴我_15/2均延长1.55倍。掺杂浓度对⁴ S ₃ / ^2-4 I _15/2荧光寿命的倒数的影响IOPC和参考（REF）样品之间的差值表明，交叉能量转移（CET）速率和电子跃迁速率受到极大抑制，这可能是由于有效指数调制对辐射跃迁速率和周期性的IOPC薄壁结构引起的非辐射跃迁速率的降低。功率相关的UC发射特性验证了IOPC结构可以有效抑制局部热效应和热猝灭的假设。这项研究为探索具有高发光效率的新型UCL材料提供了进一步的步骤。