The red emission of Eu³⁺ ions embedded in glasses containing copper with distinct plasmonic properties is reported. Either a photoluminescence (PL) enhancement or quenching is manifested depending on whether the nanocomposite is dichroic (scatters red but transmits blue) or not (ruby-colored). In addition, Eu³⁺ emission in the dichroic glass is indicated to be either enhanced or quenched depending on the excitation wavelength. The glasses consisting of barium–phosphate matrix co-doped with Cu and Eu were obtained by thermal processing. Characterizations were then performed by Fourier transform-infrared spectroscopy, UV/Vis optical absorption, PL spectroscopy with decay dynamics assessment, and light scattering measurements. The latter were conducted for the first time on plasmonic metal nanocomposite glasses, aiming to clarify the origin of the distinct optical properties. It is supported that favorable conditions for the PL enhancement are achieved when the emission of Eu³⁺ ions can benefit from light scattering by plasmonic Cu particles. However, an excitation energy transfer from Eu³⁺ to Cu nanoparticles via interband transitions leading to the PL quenching should be minimized.

据报道，嵌入含铜的玻璃中具有明显的等离子体特性的Eu ³⁺离子会发出红色光。取决于纳米复合材料是二向色的（散射红色但透射蓝色）还是不显示（红褐色），可以显示出光致发光（PL）增强或猝灭。另外，Eu ³⁺根据激发波长，表明二向色性玻璃中的发射增强或淬灭。通过热处理获得了由掺有Cu和Eu的磷酸钡基体组成的玻璃。然后通过傅立叶变换红外光谱，UV / Vis光学吸收，具有衰减动力学评估的PL光谱和光散射测量进行表征。后者是首次在等离激元金属纳米复合玻璃上进行的，目的是弄清不同光学性质的起源。当Eu ³⁺离子的发射可以受益于等离子体Cu粒子的光散射时，可以实现PL增强的有利条件。但是，来自Eu ³⁺的激发能转移 经由带间过渡导致PL猝灭的Cu纳米粒子对铜的吸附应最小化。