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Journal of Inorganic Materials

Journal of Inorganic Materials >

2010 , Vol. 25 >Issue 9: 952 - 956

DOI: https://doi.org/10.3724/SP.J.1077.2010.00952

Research Paper

Influence of Annealing Process on the Photostimulated Luminescence Properties of CsBr:Eu2+

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  • (1. The key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China)

Received date: 2009-11-30

  Revised date: 2010-04-10

  Online published: 2010-08-25

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Abstract

CsBr:Eu2+ powders were prepared by solid-state reaction. The photostimulated luminescence (PSL) spectra, the differential absorption spectra (DAS) and PSL lifetime spectra were systematically investigated. The results reveal the annealing process can increase the PSL intensity and decrease the PSL lifetime. The relationship between the annealing atmosphere and PSL properties were discussed in detail, and the results reveal that substitutional oxygen ions Os- (S: substitute, O- substitute for Br-) and interstitial hydrogen atoms Hi0 are formed in the annealing process. All of Os-, Hi0 and H2i0 are electron trap centers, which are closely related to the formation of hole traps centers.

Key words： CsBr:Eu2+; photostimulated luminescence; anneal; electron/hole trap center

Cite this article

MENG Jia, ZHAO Li-Li, WU Jie-Hua, SONG Li-Xin . Influence of Annealing Process on the Photostimulated Luminescence Properties of CsBr:Eu2+[J]. Journal of Inorganic Materials, 2010 , 25(9) : 952 -956 . DOI: 10.3724/SP.J.1077.2010.00952

References

[1] 徐叙瑢, 苏勉曾. 发光学与发光材料. 北京: 化学工业出版社, 2004: 487-490.
[2] Rowlands J. The physics of computed radiography. Physics in Medicine and Biology, 2002, 47(23): 123-166.
[3] Spaeth J. Recent developments in X-ray storage phosphor materials. Radiation Measurements, 2001, 33(5): 527-532.
[4] Hackenschmied P, Zeitler G, Batentschuk M, et al. Storage performance of X-ray irradiated doped CsBr. Nuclear Inst. and Methods in Physics Research B, 2002, 191(1-4): 163-167.
[5] Schweizer S, Rogulis U, Assmann S, et al. RbBr and CsBr doped with Eu2+ as new competitive X-ray storage phosphors. Radiation Measurements, 2001, 33(5): 483-486.
[6] Rogulis U, Schweizer S, Assmann S, et al. Photostimulated luminescence process in the X-ray storage phosphor CsBr:Ga+. Journal of Applied Physics, 2000, 87(1): 207-211.
[7] Hackenschmied P, Schierning G, Batentschuk M, et al. Precipitation- induced photostimulated luminescence in CsBr:Eu2+. Journal of Applied Physics, 2003, 93(9): 5109-5112.
[8] Zorenko Y V, Turchak R M, Gryk W, et al. Luminescent spectroscopy of Eu2+ centers in CsBr:Eu single crystals at 10-550K. Journal of Luminescence, 2004, 106(3/4): 313-320.
[9] Zorenko Y, Turchak R, Voznjak T, et al. Time-resolved luminescence of Eu2+-aggregate centers in CsBr crystals. Physica Status Solid C, 2005, 2(1): 535-538.
[10] Hesse S, Zimmermann J, von Seggern J H, et al. CsEuBr3: crystal structure and its role in the photostimulation of CsBr: Eu2+. Journal of Applied Physics, 2006, 100(8): 083506-1-5.
[11] Zorenko Y, Turchak R, Voznjak T. Energy transfer between the Eu2+ dipole and aggregate centers in CsBr: Eu crystals. Radiation Measurements, 2007, 42(4/5): 672-674.
[12] Hesse S, Zirnmermann J, Seggern H, et al. The role of segregations and oxygen doping in the photo stimulation mechanism of CsBr:Eu2+. Radiation Measurements, 2007, 42(4/5): 638-643.
[13] 方书淦, 张启仁. 晶体色心物理学. 上海: 上海交通大学出版社, 1989: 100.
[14] Savel'ev V, Avdonin V, Dugarova L, et al. Aggregation of Eu2+ centers in europium-activated alkali halide crystals. Sov. Phys. Solid State, 1974, 16: 700-702.
[15] Nikl M, Nitsch K, Polak K, et al. Optical properties of the Pb2+-based aggregated phase in a CsCl host crystal: quantum-   confinement effects. Physical Review B, 1995, 51(8): 5192-5199.

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