Photoluminescence Properties of Er3+-Doped and Er3+/Yb3+ Codoped SnO–P2O5 Glasses
Photoluminescence Properties of Er3+-Doped and Er3+/Yb3+ Codoped SnO–P2O5 Glasses
复制标题
DOI：
10.1111/j.1551-2916.2011.04489.x
复制
发表时间：
2011-07
影响因子：
3.9
通讯作者：
J. Shyu;C. Chiang
中科院分区：
文献类型：
--
作者：
J. Shyu;C. Chiang
研究了Er_2 O_3（0- 8mol%）掺杂和Er_2 O_3和Yb_2 O_3共掺杂（1- 7mol%）对SnO-P_2 O_5玻璃的吸收截面、荧光和上转换发光强度的影响。当总稀土氧化物含量> 4mol%时，SnO-P2 O 5玻璃基质中ErPO 4和（Yb，Er）PO 4晶相的沉淀在确定吸收截面、PL和上转换强度中起重要作用。掺Er ~（3+）玻璃的PL特性随Er_2O_3含量的变化规律明显不同于一般的稀土掺杂玻璃。这一结果可以用ErPO 4晶体引起的光散射效应以及随着Er 2 O3含量的增加，ErPO 4晶体中Er-Er距离恒定来解释。当Yb_2O_3的最佳掺杂量为6mol%时，共掺杂后玻璃的发光强度提高了14.7倍（约1.81 × 1021 ions/cm ~ 3）。进一步增加Yb 2 O3的含量导致PL强度的降低，这可以用APTE上转换效应来解释。
The effects of Er2O3 (0–8 mol%) doping and Er2O3 and Yb2O3 codoping (total 1–7 mol%) on the absorption cross-section, PL, and upconversion intensities of the SnO–P2O5 glass have been investigated. Precipitation of ErPO4 and the (Yb, Er)PO4 crystalline phase in the SnO–P2O5 glass matrix when the total rare-earth oxide content is >4 mol% plays an important role in determining the absorption cross-section, PL, and upconversion intensities. For Er3+-doped glass, the variation of the PL characteristic with the Er2O3 content is obviously different from that for general rare-earth-doped glasses. This result is explained in terms of the light-scattering effect caused by the ErPO4 crystals and the constant Er–Er distance in ErPO4 crystals with increasing Er2O3 content. After codoping with Yb2O3, the PL intensity of the glass is enhanced by about 14.7 times at the optimum Yb2O3 content of 6 mol% (∼1.81 × 1021 ions/cm3). Further increase in the Yb2O3 content results in the reduction of PL intensity, which can be explained in terms of the APTE upconversion effect.