Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

Photostimulated Luminescence and Photoluminescence of SrCl2:Eu2+ Phosphors

SrCl2:Eu2+ 형광체의 광발광 및 광자극발광 특성

  • Published : 2002.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

$SrCl_2:Eu^{2+}$ phosphors were prepared by the solid phase reaction method, and their photostimulated luminescence(PSL) and photoluminescence(PL) characteristics were investigated. The PSL and PL peak of the $SrCl_2:Eu^{2+}$ phosphors are due to the $5d{\rightarrow}4f$ transition of $Eu^{2+}$ ions in phosphors. The PSL and PL spectrum obtained by the 355nm excitation was observed in $380{\sim}440\;nm$ region with the peak at 407 nm. The dose response of the PSL phosphors were linear within $2.5\;mGy{\sim}200\;mGy$ of 100 kV X-ray. The fading of the phosphors at room temperature was approximately 60% after 20 min.

고상반응법으로 $SrCl_2:Eu^{2+}$ 형광체를 제작하고, 제작한 형광체의 광자극발광과 광발광 특성을 조사하였다. $SrCl_2:Eu^{2+}$ 형광체의 광발광 및 광자극발광은 $Eu^{2+}$의 $5d{\rightarrow}4f$ 천이에 기인되었으며, 355 nm의 광으로 여기시켰을 때 광자극발광과 광발광 스펙트럼의 파장범위는 모두 $380{\sim}440\;nm$이었고, 피이크 파장은 407 nm이었다. $SrCl_2:Eu^{2+}$ 형광체의 선량의존성은 $2.5\;mGy{\sim}200\;mGy$ 영역에서 우수한 선형성을 나타내었으며, 상온에서 광자극발광의 fading은 20분에 60%이었다.

Keywords

References

  1. Cryst. Latt. Def. and Amorph. Mat. v.18 Spectral distribution and decay times of $Eu^{2+}$ luminescence in SrCl₂ particles embedded in the alkali chloride material U. Caldino;M.E. villafuerte-Castrejon;J. Rubio
  2. J. Lumin. v.21 no.3 Fluorescence lifetime and quantum efficiency for 5d→4f transitions in $Eu^{2+}$ doped chloride and fluoride crystal T. Kobayasi;S. Mroczkowski;J. Owen https://doi.org/10.1016/0022-2313(80)90004-6
  3. J. Lumin. v.72 no.74 Pulseannealing study of photo-stimulated luminescence and trapped-hole states in BaFBr:$Eu^{2+}$ A. Ohnishi;I. Akimoto;K. Kanno;Y. Iwabuchi;N. Mori
  4. Appl. Phys. Lett. v.72 no.12 Photostimulable luminescence and imaging in vapor-deposited BaFCl:Eu thin film phosphors P. F. Caricia;R. S. McLean;M. K. Crawford;B. D. Jones https://doi.org/10.1063/1.120581
  5. J. Lumin. v.72 no.74 Photostimulated luminecence of BaFBr:$Eu^{2+}$ M. Bradford;D. A. Andrews;A. Harrison;S. G. Roden;T. A. King https://doi.org/10.1016/S0022-2313(96)00176-7
  6. J. Appl. Phys. v.80 no.9 Photostimulated luminecence of BaFBr:$Eu^{2+}$ phosphors W. Chen;M. Su;J. Song;J. Lin https://doi.org/10.1063/1.363468
  7. IEEE Trans. Necl. Sci. v.47 no.4 New Photostimulable phosphor materials for digital radiography H. Nanto;M. Miyazaki;A. Imai;H. Komori;Y. Douguchi;E. Kusano;A. Kinabara https://doi.org/10.1109/23.873025
  8. Radiat. Prot. Dosim. v.47 Optically stimulated luminescence in KCl:Eu single crystal H. Nanto;K. Murayama;T.Usuda;S. Tanigdchi;N. Takeuchi https://doi.org/10.1093/oxfordjournals.rpd.a081751
  9. J. Appl. Phys. v.66 no.9 Photostimulation mechanism of X-ray irradiated RbBr:Tl H. Von Seggern;A. Meijerink;J. Voigt;A. Winnacker https://doi.org/10.1063/1.343936
  10. J. App. Phys. v.80 no.4 Hole-trapping sites and the mechanism of the photostimulated luminescence of the X-ray storage phosphor RbI:$Tl^+$ U. Rogulis;C. Dietze;Th. Pawlik;Th. Hangleiter;J.M. Spaeth https://doi.org/10.1063/1.363078
  11. Phys. Rev. B. v.39 no.10 Excited-state absorption by $Eu^{2+}$ in KBr. KCl and NaCl L. D. Merkle;P. K. Bandyopadhyay https://doi.org/10.1103/PhysRevB.39.6939
  12. Appl. Phys. Lett. v.67 no.1 Violet light emitting SrS/SrCl:Eu thin-film electroluminescent devices W. Kong;S. Ahmed;J. Ferguson;R. solanki https://doi.org/10.1063/1.115514
  13. J. Lumin. v.68 no.5 Emission and decay time studies of $Sn^{2+}$ centers in SrCl₂ V. Tabakova https://doi.org/10.1016/0022-2313(96)00002-6
  14. Phys. Rev. v.108 no.3 Studies on some infrared stimulable phosphors S. P. Keller;J. E. Mapes;G. Cheroff
  15. Proceedings of SPIE Advanced Sensors and Monitors for Process Industries and the Environment Novel two-diemensional IR image sensor utilizing photostimulated luminescence in Ⅱ-Ⅵ compund phosphor ceramics Y. Douguchi;T. Sato;M. Miyazaki;A. Imai;E. Kusano;A. Kinbara;S. Nasu;H. Nanto
  16. Proceedings of SPIE Rare-Earth-Doped Materials and Devices Photostimulated luminescence in CaxSrl-xS:Eu, Sm phosphor ceramics and its application to radiation dosimetry H. Nanto;H. Komori;K. Araki;Y. Douguchi;E. Kusano;S. Nasu;K. Kinbara
  17. Journal of Luminescence v.69 no.5-6 Luminescence and storage properties of LiYSiO₄:Ce M. J. Knitel;P. Dorenbos;C. M. Combes;J. Andriessen;C.W.E. van Eijk https://doi.org/10.1016/S0022-2313(96)00112-3