The luminescence of Ho³⁺ ions in phosphate glass containing a high concentration of Cu⁺ ions and also Cu nanoparticles (NPs) is reported. The glasses consisting of a barium-phosphate matrix were obtained by thermal processing and characterized by Fourier transform-infrared spectroscopy (FT-IR), optical absorption, and photoluminescence (PL) spectroscopy. The FT-IR data appeared consistent with a network modifier role of Cu⁺ ions with no significant structural alteration induced by NPs. The absorption spectrum for heat-treated Cu⁺/Ho³⁺ co-doped glass exhibited narrow plasmon resonance for Cu NPs around 575 nm. It was indicated that Cu⁺ PL dominates for excitation resonant with Cu⁺ absorption. Conversely, Ho³⁺ emission is clearly displayed for excitation in the visible (e.g. 450 nm) away from Cu⁺ excitation. Precipitating Cu NPs resulted in suppression of Cu⁺ band emission and the Ho³⁺ PL being quenched. Following the assessment of Ho³⁺ emission dynamics, likely energy transfer processes involving Cu NPs as energy acceptors were proposed.

据报道，Ho ³⁺离子在含有高浓度Cu ⁺离子以及Cu纳米颗粒（NPs）的磷酸盐玻璃中发光。通过热处理获得由磷酸钡基质组成的玻璃，并通过傅里叶变换红外光谱（FT-IR），光吸收和光致发光（PL）光谱对其进行表征。FT-IR数据似乎与Cu ⁺离子的网络修饰剂作用一致，而NPs并未引起明显的结构改变。热处理的Cu ⁺ / Ho ³⁺共掺杂玻璃的吸收光谱显示出575 nm附近的Cu NPs的窄等离子体激元共振。结果表明，Cu ⁺ PL在与Cu共振中起主导作用。⁺吸收。相反，在可见光（例如450 nm）中，远离Cu ⁺激发，可以清楚地显示Ho ³⁺发射。Cu NPs的沉淀导致Cu ⁺带发射的抑制和Ho ³⁺ PL的猝灭。在评估了Ho ^3+的排放动力学之后，提出了可能的能量转移过程，其中涉及Cu NPs作为能量受体。