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Difference in luminescence properties between Sm doped ZnS and Eu doped ZnS

机译:Sm掺杂的ZnS和Eu掺杂的ZnS的发光特性差异

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A sharp luminescence peak from Sin doped ZnS at 650 nm which can be assigned as (4)G(5/2)-H-6(9/2) transition of Sm3+ ion was observed; however, no luminescence peak related to Eu3+, which can have luminescence in the similar spectral region, was observed from Eu doped ZnS. A defect level situated at about 0.36 eV above the valence band was detected only in Sm doped ZnS by infrared absorption spectroscopy, The cause of the difference in the luminescence properties between Sm doped ZnS and Eu doped ZnS was reasonably explained by the model of defect related energy transfer associated with the 0.36 eV level. [References: 9]
机译:观察到在650 nm处来自Sin掺杂的ZnS的尖锐发光峰,可以认为是Sm3 +离子的(4)G(5/2)-H-6(9/2)跃迁。然而,从掺Eu的ZnS中未观察到与Eu3 +有关的发光峰,该峰可能在相似的光谱区域内发光。通过红外吸收光谱法仅在掺Sm的ZnS中检测到位于价带上方约0.36 eV的缺陷水平,并通过缺陷相关模型合理地解释了掺Sm的ZnS和Eu掺杂的ZnS发光性质差异的原因。与0.36 eV水平相关的能量转移。 [参考:9]

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