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Eu3+:NaGd(WO4)2 纳米粒子和纳米棒的荧光特性

上传者: 2021-04-08 21:52:10上传 PDF文件 907.96KB 热度 9次
The NaGd(WO4)2:Eu3+ phosphors were prepared by the microemulsion mediated hydrothermal method. The morphology.and size of the samples could be dependent on the pH in the initial solution. These phosphors obtained had a strong absorption at 395.nm matching with the popular emission of near-UV LED chips, and could emit intense red light at 616 nm. The small ellipsoid-like.particles or short rods were provided with large parameters of oscillator strength Ω2 and asymmetry ratio. Compared to the elli
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