Luminescence properties of Pr6O11-doped and PrF3-doped germanate glasses for wideband NIR phosphor
Luminescence properties of Pr6O11-doped and PrF3-doped germanate glasses for wideband NIR phosphor
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DOI：
10.1007/s10854-016-6218-2
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
S. Fuchi;Wataru Ishikawa;Seiya Nishimura;Y. Takeda
中科院分区：
文献类型：
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作者：
S. Fuchi;Wataru Ishikawa;Seiya Nishimura;Y. Takeda
我们合成了0.12Pr6O11- 45 Sb 2 O3 - 10 ZnO-45 GeO 2玻璃和0.72PrF3- 45 Sb 2 O3 - 10 ZnO-45 GeO 2作为LED基光源的宽带近红外荧光粉。我们已经实现了从700至1100 nm的超宽带发光从两个样品。掺杂样品在730 nm（3 P0 → 3F 4跃迁）附近的发光强度低于1040 nm（1D 2 → 3F 4跃迁）附近的发光强度。另一方面，在PrF 3掺杂的样品中，730 nm附近的发光强度高于1040 nm附近的发光强度。这些结果表明，Pr 3+离子周围的声子能量应通过PrF 3取代Pr 6 O 11降低。掺杂PrF 3的样品的输出功率比掺杂Pr 6 O 11的样品的输出功率高1.5倍。掺PrF 3样品的1D 2能级荧光寿命比掺Pr 6 O 11样品的短。这些结果表明，掺杂稀土氟化物的氧化物玻璃应该是有用的，我们实用的宽带近红外荧光粉。
We have synthesized 0.12Pr6O11–45Sb2O3–10ZnO–45GeO2glass and 0.72PrF3–45Sb2O3–10ZnO–45GeO2as a wideband near-infrared phosphor for LED-based light-sources. We have achieved an ultra-wideband luminescence from 700 to 1100 nm from both samples. Luminescence intensity around 730 nm (3P0→3F4transition) was lower than that around 1040 nm (1D2→3F4transition) in the Pr6O11-doped sample. On the other hand, luminescence intensity around 730 nm was higher than that around 1040 nm in PrF3-doped sample. These results indicated that a phonon energy around Pr3+ions should be decreased by substituting PrF3for Pr6O11. An output power of the PrF3-doped sample was 1.5 times higher than that of the Pr6O11-doped sample. A measured fluorescence lifetime of1D2level in the PrF3-doped sample was shorter than that in the Pr6O11-doped one. These results indicated that oxide glasses doped with rare-earth fluoride should be useful for our practical wideband NIR phosphor.