Abstract In this work, we synthesized the phosphate glass pure and doped with erbium ions (Er3+) and investigated the effect of the controlled atmosphere and fluoride incorporation on the optical properties of Er3+ ions using the Judd-Ofelt theory. The PAN and PANK glass matrices with nominal compositions 60P205 - 10Al2O3 - 30Na2O (mol%) and 40P2O5 - 20Al2O3 - 35Na2O - 5K2O (mol%), pure and doped with Er2O3 and co-doped with LiF and CaF2, were synthesized by the fusion method in atmosphere in the air (NA) and controlled atmosphere (CA). The optical properties were investigated by optical absorption (AO), photoluminescence (PL) and temporal resolution photoluminescence (TRPL). The Judd-Ofelt theory was applied to determine the spectroscopic properties of Er3+ ions. The lifetime and quantum efficiency of the transition 4I13/2 → 4I15/2 were analyzed as a function of the atmosphere and addition of fluorides. The hydroxyl density (OH−) is determinant to the spectroscopic parameters of Er3+ inserted in the PAN and PANK glass matrices, and that it can be reduced both synthesized in CA and when adding LiF or CaF2. We found that the quantum efficiency of the transition4I13/2 → 4I15/2 was higher using the LiF doping methodology, and highest using together with CA, around 94%. Thus, the glass matrices synthesized with LiF and CA showed the best results. However, due to the high cost of synthesis using CA, we recommend only the use of fluorides in the matrices, since it presented close results. Interestingly, the PAN:Er matrix, which presented the worst optical results, with the incorporation of LiF and CA presented a quantum efficiency of 88% relatively high compared to other works in the literature.

中文翻译：

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Er3+ 离子在磷酸盐玻璃中的量子效率高：可控气氛和氟化物的添加

摘要 在这项工作中，我们合成了掺铒离子 (Er3+) 的纯磷酸盐玻璃，并使用 Judd-Ofelt 理论研究了受控气氛和氟化物掺入对 Er3+ 离子光学性质的影响。PAN 和 PANK 玻璃基体的标称成分为 60P2O5 - 10Al2O3 - 30Na2O (mol%) 和 40P2O5 - 20Al2O3 - 35Na2O - 5K2O (mol%)，纯且掺有 Er2O3 和 LiF 和 CaF2大气中的大气法 (NA) 和受控大气法 (CA)。通过光吸收 (AO)、光致发光 (PL) 和时间分辨率光致发光 (TRPL) 研究光学性质。应用 Judd-Ofelt 理论来确定 Er3+ 离子的光谱特性。4I13/2 → 4I15/2 跃迁的寿命和量子效率被分析为大气和氟化物添加的函数。羟基密度 (OH-) 决定了插入到 PAN 和 PANK 玻璃基质中的 Er3+ 的光谱参数，并且它可以在 CA 中合成以及添加 LiF 或 CaF2 时降低。我们发现使用 LiF 掺杂方法，过渡 4I13/2 → 4I15/2 的量子效率更高，与 CA 一起使用时最高，约为 94%。因此，用 LiF 和 CA 合成的玻璃基质显示出最好的结果。然而，由于使用 CA 的合成成本高，我们建议只在基质中使用氟化物，因为它提供了接近的结果。有趣的是，PAN:Er 矩阵的光学结果最差，