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Permeation and optical properties of YAG:Er3+ fiber membrane scintillators prepared by novel sol–gel/electrospinning method

  • Zhaoxi Chen
  • Artem A. Trofimov
  • Luiz G. Jacobsohn
  • Hai Xiao
  • Konstantin G. Kornev
  • Dong Xu
  • Fei Peng
Original Paper: Functional coatings, thin films and membranes (including deposition techniques)

Abstract

An electrospinning method for fabrication of the YAG:Er3+ fibrous membrane is developed and the scintillation properties of the obtained membranes were examined. A homogeneous precursor YAG sol was synthesized allowing to control the sol–gel transition. The synthesized precursor allows one to achieve the 5 wt.% level of fiber doping with Er without formation of any undesired crystalline phases. It was found that the relative humidity had a strong impact on the fiber microstructure. The fibers obtained at the low relative humidity level (~30%) had almost straight cylindrical shape with an average diameter of ~590 nm, their surface was smooth. The shape of fibers obtained at the high relative humidity level (~50%) deviated from the straight cylindrical shape and the average diameter was larger, ~1.12 µm. The fluid permeability of membranes, K, obtained at the low relative humidity level was measured using an upward wicking experiment to give K~10−13 m2. The YAG:Er membrane presented a strong green photoluminescence under ultraviolet excitation and intense radioluminescence dominated by emission lines at 398 and 467 nm under the X-ray excitation. The properties of these materials make them promising candidates as porous scintillators for the detection of ionizing radiation of flowing fluids.

Graphical Abstract

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Keywords

YAG:Er fiber Fluid transport Luminescence Porous scintillator 

Notes

Acknowledgements

This work is supported by the Department of Energy under grant DE-FE00012272 and the National Science Foundation under Grant No. 1207080.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringClemson UniversityClemsonUSA
  2. 2.COMSET, Center for Optical Materials Science and Engineering TechnologiesClemson UniversityAndersonUSA
  3. 3.Department of Electrical and Computer EngineeringClemson UniversityClemsonUSA
  4. 4.School of Material Science and EngineeringJiangsu UniversityZhenjiangChina

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