Abstract Zinc phosphate glasses, activated with Ag m n + clusters and Sm3+, were prepared by the conventional melt-quenching method. The X-ray diffraction patterns revealed that the samples remain amorphous for Ag and Sm3+ contents up to 3.0 and 1.0 mol%, respectively. The Raman and FTIR spectra showed that the main vibrational modes are associated with P–O bonds. The absorption coefficient spectrum of the Ag singly doped glass sample displayed a broad band centered at 318 nm, related to Ag m n + clusters, whereas those co-doped with Sm3+ showed, in addition to the Ag m n + cluster absorption, the well-known Sm3+ absorptions at 343, 360, 374, 401, 415, 438, 465 and 477 nm. The photoluminescence excitation spectrum of the Ag singly doped glass sample exhibited a broadband from 3 to 6 eV (207–413 nm), assigned to superposition of the Ag+: 4 d10 → 4d95s and Ag m n + cluster: S0 → S1 transitions, being the excitation into the Ag m n + clusters attractive for W-LEDs applications. The photoluminescence emission spectra of the Ag singly doped glass sample, upon Ag m n + cluster excitations at 340, 350 and 360 nm, displayed cold white light tonality, with (0.279, 0.300) CIE1931 chromaticity coordinates of 9453 K and bluish-white light tonality with (0.264, 0.276) and (0.259, 0.270) CIE1931 chromaticity coordinates and correlated color temperature values of 12901 and 14201 K, respectively. The global emission of the Ag and Sm3+ co-doped glass samples was, upon 340, 350 and 360 nm excitations, gradually tuned from the bluish and cold white region to the warm white one, as the Sm3+ content was increased, with correlated color temperatures in the 14201-2691 K range. The Sm.3+ emission bands, under excitations at 340 and 350 nm, were attained at expense of radiative and non-radiative energy transfer from the Ag m n + clusters, as revealed respectively by the sinks mounted on the Ag m n + cluster emission bands and the emission decay profile shortening in presence of Sm3+. Analysis of the Ag m n + cluster emission intensity and decay profiles, with the Dexter and Burstein models, showed that Ag m n + cluster cross-relaxation and/or non-radiative energy transfer to Sm3+ might be dominated by an electric quadrupole-quadrupole interaction.

中文翻译：

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用 Agmn+ 簇和 Sm3+ 激活的磷酸锌玻璃中的可调白光发射

摘要 采用传统的熔融淬火方法制备了Ag mn + 簇和Sm3+ 活化的磷​​酸锌玻璃。X 射线衍射图显示，当 Ag 和 Sm3+ 含量分别高达 3.0 和 1.0 mol% 时，样品仍保持无定形。拉曼和 FTIR 光谱表明主要的振动模式与 P-O 键有关。Ag 单掺杂玻璃样品的吸收系数光谱显示出一个以 318 nm 为中心的宽带，与 Ag mn + 簇有关，而那些与 Sm3+ 共掺杂的玻璃样品显示，除了 Ag mn + 簇吸收外，众所周知的Sm3+ 在 343、360、374、401、415、438、465 和 477 nm 处的吸收。Ag 单掺杂玻璃样品的光致发光激发光谱表现出 3 到 6 eV（207-413 nm）的宽带，分配给 Ag+ 的叠加：4 d10 → 4d95s 和 Ag mn + 簇：S0 → S1 转变，激发进入对 W-LED 应用有吸引力的 Ag mn + 簇。Ag 单掺杂玻璃样品的光致发光发射光谱，在 340、350 和 360 nm 处的 Ag mn + 簇激发下，显示冷白光色调，具有 (0.279, 0.300) CIE1931 色度坐标为 9453 K 和蓝白色光色调(0.264, 0.276) 和 (0.259, 0.270) CIE1931 色度坐标和相关色温值分别为 12901 和 14201 K。Ag 和 Sm3+ 共掺杂玻璃样品的全局发射在 340、350 和 360 nm 激发下，随着 Sm3+ 含量的增加和相关色温的增加，逐渐从蓝色和冷白色区域调谐到暖白色区域在 14201-2691 K 范围内。Sm.3+ 发射带，在 340 和 350 nm 的激发下，以从 Ag mn + 簇的辐射和非辐射能量转移为代价获得，分别由安装在 Ag mn + 簇发射带上的汇和发射衰减曲线在存在时缩短Sm3+。使用 Dexter 和 Burstein 模型对 Ag mn + 簇发射强度和衰减曲线的分析表明，Ag mn + 簇交叉松弛和/或向 Sm3+ 的非辐射能量转移可能受电四极杆-四极杆相互作用支配。