Abstract Bismuth silicate glasses at various compositions of Mn2+ and Yb3+ were successfully synthesized by conventional melt and quenching method of 40 % Bi2O3: 60 % SiO2. Mn2+ presents a simultaneous green-orange emission by means of simultaneous four and six folded coordination when exciting with 350 nm and by up-conversion when exciting with 980 nm. Yb3+ presents its known 976 nm emission by its 2F5/2 → 2F7/2 transition when exciting at 350 nm in 6A1(S) → 4E(D) Mn2+ energy level. This is proposed to be possible by the existence of Mn2+-Yb3+ dimers, that produce new energy levels seen in absorbance and excitation scheme labeled as 2F7/26A1(S) → 2F5/24T2(G), 2F7/26A1(S) → 2F5/24T1(G), 2F7/26A1(S) → 2F7/24T2(G) and 2F7/26A1(S) → 2F7/24T1(G) centered at 471, 521, 588 and 622 nm respectively. An energy diagram is presented to show the mechanism of this back and forth energy transfer. Absorbance, x-ray diffraction, excitation and emission spectroscopic studies are shown.

中文翻译：

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Mn2+-Yb3+ 通过超交换相互作用在铋硅酸盐玻璃中来回能量传递

摘要 采用40 % Bi2O3: 60 % SiO2 的常规熔融淬火法成功合成了Mn2+ 和Yb3+ 各种成分的铋硅酸盐玻璃。Mn2+ 在用 350 nm 激发时通过同时四和六折叠配位呈现同时的绿橙色发射，当用 980 nm 激发时通过上转换。Yb3+ 在 6A1(S) → 4E(D) Mn2+ 能级中以 350 nm 激发时，通过其 2F5/2 → 2F7/2 跃迁呈现其已知的 976 nm 发射。由于 Mn2+-Yb3+ 二聚体的存在，这被认为是可能的，其产生在标记为 2F7/26A1(S) → 2F5/24T2(G), 2F7/26A1(S) → 2F5 的吸光度和激发方案中看到的新能级/24T1(G)、2F7/26A1(S) → 2F7/24T2(G) 和 2F7/26A1(S) → 2F7/24T1(G) 分别以 471、521、588 和 622 nm 为中心。提供了一个能量图来显示这种来回能量转移的机制。显示了吸光度、X 射线衍射、激发和发射光谱研究。