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Spectroscopic Study of a Single Crystal of SrAl2O4:Eu2+:Dy3+
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-03-26 , DOI: 10.1021/acs.jpcc.8b12568 Teresa Delgado 1 , Jafar Afshani 1 , Hans Hagemann 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-03-26 , DOI: 10.1021/acs.jpcc.8b12568 Teresa Delgado 1 , Jafar Afshani 1 , Hans Hagemann 1
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The extraordinary long phosphorescence of SrAl2O4:Eu2+:Dy3+ has been widely studied in powder samples because of its broad range of applications in this form and despite the fact that the bulk material shows higher intensity emission and longer afterglow. However, the investigation of SrAl2O4:Eu2+:Dy3+ crystals that, unlike the powder, do not contain surface defects, would allow a better insight into the mechanism that governs the long-lasting phosphorescence of this co-doped material. Thus, a SrAl2O4:Eu2+:Dy3+ single crystal was studied in detail by absorption spectroscopy and photoluminescence, including a novel estimation of its extinction coefficient. In addition, thermoluminescence measurements and wavelength-dependent quantum efficiency measurements have been performed to improve the understanding of the role of both europium and dysprosium ions in the corresponding persistent phosphorescence mechanism.
中文翻译：
SrAl 2 O 4：Eu 2+：Dy 3+单晶的光谱研究
SrAl 2 O 4：Eu 2+：Dy 3+的超长磷光已在粉末样品中得到了广泛研究，这是因为SrAl 2 O 4：Eu 2+：Dy 3+具有这种形式的广泛应用，尽管散装材料显示出更高的强度发射和更长的余辉。然而，研究SrAl 2 O 4：Eu 2+：Dy 3+晶体，与粉末不同的是，该晶体不含表面缺陷，可以更好地了解控制这种共掺杂的持久磷光的机理。材料。因此，SrAl 2 O 4：Eu 2+：Dy 3+通过吸收光谱和光致发光对单晶进行了详细研究，包括其消光系数的新估计。另外，已经进行了热致发光测量和依赖于波长的量子效率测量，以增进对euro和and离子在相应的持久性磷光机理中的作用的理解。
更新日期：2019-03-27
中文翻译：
SrAl 2 O 4：Eu 2+：Dy 3+单晶的光谱研究
SrAl 2 O 4：Eu 2+：Dy 3+的超长磷光已在粉末样品中得到了广泛研究，这是因为SrAl 2 O 4：Eu 2+：Dy 3+具有这种形式的广泛应用，尽管散装材料显示出更高的强度发射和更长的余辉。然而，研究SrAl 2 O 4：Eu 2+：Dy 3+晶体，与粉末不同的是，该晶体不含表面缺陷，可以更好地了解控制这种共掺杂的持久磷光的机理。材料。因此，SrAl 2 O 4：Eu 2+：Dy 3+通过吸收光谱和光致发光对单晶进行了详细研究，包括其消光系数的新估计。另外，已经进行了热致发光测量和依赖于波长的量子效率测量，以增进对euro和and离子在相应的持久性磷光机理中的作用的理解。
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