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首页> 外文期刊>Thin Solid Films >Tungsten-tellurite glasses and thin films doped with rare-earth elements produced by radio frequency magnetron deposition
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Tungsten-tellurite glasses and thin films doped with rare-earth elements produced by radio frequency magnetron deposition

机译：钨-碲玻璃和掺有射频磁控管沉积产生的稀土元素的薄膜

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摘要

The formation of tungsten-tellurite films and investigation of their Raman scattering properties, and the studding of the luminescence properties of tungsten-tellurite glasses doped with Er~(3+) were performed. The amorphous tungsten-tellurite films were deposited by reactive radio frequency magnetron sputtering. For Raman measurements the samples of TeO_2-WO_3 films without Er~(3+) doping were prepared. Raman spectra of the tungsten-tellurite films of the composition (100-x) TeO_2-xWO_3 with x=5-30 mol% were measured. Raman measurements demonstrated that tellurium save the coordination of four in the films, corresponding to the coordination in the bulk glasses and had a short range order like the one in the crystalline α-TeO_2.rnFor measuring of optical absorption and photoluminescence spectra the Er~(3+)-doped TeO_2-WO3 glass samples were used. The maximum of photoluminescence spectra was observed in the Er-doped TeO_2-WO_3 glasses and films at the wavelength of～1.53 μm. The Judd-Ofelt parameters, Ωλ (λ=2, 4, 6), of Er~(3+) are evaluated from optical absorption spectra for tungsten-tellurite glasses. Er~(3+)-doped tungsten-tellurite glasses showed very high quantum efficiency when comparing the calculated radiative decay time with the measured lifetime of the ~4I_(13/2) metastable level. The estimation of Judd-Ofelt parameters gave the values of Ω_2=(4.28 ±0.2) × 10~(20) cm~2, Ω_4=(1.13±0.2)× 10~(20) cm~2 and Ω_6= (0.72 ± 0.2) × 10~(20) cm~2, which were in good agreement with data published in literature for other tungsten-tellurite glasses.
机译：进行了钨碲石薄膜的形成及其拉曼散射性能的研究，并对掺有Er〜（3+）的钨碲石玻璃的发光性能进行了研究。通过反应性射频磁控溅射沉积非晶钨-碲薄膜。为了进行拉曼测量，制备了没有Er〜（3+）掺杂的TeO_2-WO_3薄膜样品。测量了x ＝ 5-30mol％的组成（100-x）TeO_2-xWO_3的钨-碲薄膜的拉曼光谱。拉曼测量表明，碲保留了薄膜中四个的配位，对应于大块玻璃中的配位，并且具有短程有序，类似于晶体α-TeO_2中的配位。rn用于测量光吸收和光致发光光谱的Er〜（使用3+）掺杂的TeO_2-WO3玻璃样品。在掺Er的TeO_2-WO_3玻璃和薄膜中，在〜1.53μm的波长处观察到最大的光致发光光谱。从钨碲玻璃的光吸收光谱评估Er〜（3+）的Judd-Ofelt参数Ωλ（λ= 2、4、6）。当将计算得出的辐射衰变时间与测得的〜4I_（13/2）亚稳态寿命进行比较时，掺Er〜（3+）的钨铁矿玻璃显示出很高的量子效率。 Judd-Ofelt参数的估计给出了Ω_2=（4.28±0.2）×10〜（20）cm〜2，Ω_4=（1.13±0.2）×10〜（20）cm〜2和Ω_6=（0.72± 0.2）×10〜（20）cm〜2，这与其他钨碲玻璃的文献数据相吻合。

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