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LaCl3:Ce is an excellent rare earth halide scintillation crystal discovered in the beginning of this century. Pure LaCl3 crystal and LaCl3 crystal doped with several different Ce concentrations were grown by vertical Bridgman method. Their transmission and luminescence as well as decay time were measured and compared with each other. It was found that the cut-off edge, emission wavelength as well as decay time for pure LaCl3 crystals are respectively 215 nm, 405 nm and 1 s. This emission is explained by the self trapped exciton (STE) of LaCl3. However, with the increase of Ce concentration in the crystal, the cut-off edge of LaCl3:Ce crystal shifts to about 300 nm, and the luminescence is dominated by the emission originating from 5d-4f transition of Ce ions. Meanwhile, the increase of the luminescence intensity of Ce3+ ion emission is accompanied with the expense of STE emission, this anti-correlation between the Ce3+ and STE luminescence intensity is interpreted by the energy transfer from STE to Ce ions in LaCl3:Ce scintillation crystals.
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Keywords:
- LaCl3：Ce /
- luminescence properties /
- doping effect /
- energy transfer
[1] Guillot-Noel O, de Haas J T M, Dorenbos P, van Eijk C W E, Kramer K, Gudel H U 1999 J. Luminescence 85 21
[2] Van Loef E V D, Dorenbos P, van Eijk C W E 2000 Applied Physics Letters 77 1467
[3] Normanda S, Iltis A, Bernard F, Domenech T, Delacour P 2007 Nucl Instr Meth Phys Res A 572 754
[4] Shah K S, Glode J, Klugerman M, Crignano L, Mose W W, EDerenzo S, Weber M J 2003 Nucl Instr Meth Phys Res A 505 76
[5] Masahiro Tsutsumi, Yoshihiko Tanimura 2006 Nucl Instr Meth Phys Res A 557 554
[6] Iltis A, Mayhugh M R, Menge P, Rozsa C M, Selles O, Solovyev V 2006 Nucl Instr Meth Phys Res A 563 359
[7] van Loef E V D, Dorenbos P, van Eijk C W E, Kramer K, Gudel H U 2001 IEEE Trans. Nucl. Sci. 48 341
[8] Ren G H, Pei Y U, Chen X F 2009 Journal of Alloys and Compounds 467 120
[9] Bizarri G, Dorenbos P 2009 J. Phys.: Condens. Matter 21 235605
[10] Wang D Y, Xie P P, Zhang W P, Lou L R, Xia S D, 2001 Acta Phys. Sin. 50 329 (in Chinese) [王殿元, 谢平波, 张蔚萍, 楼立人, 夏上达 2001 50 329]
[11] Kramer K W, Dorenbos P, Gudel H U, van Eijk C W E 2006 J. Mater. Chem. 16 2773
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[1] Guillot-Noel O, de Haas J T M, Dorenbos P, van Eijk C W E, Kramer K, Gudel H U 1999 J. Luminescence 85 21
[2] Van Loef E V D, Dorenbos P, van Eijk C W E 2000 Applied Physics Letters 77 1467
[3] Normanda S, Iltis A, Bernard F, Domenech T, Delacour P 2007 Nucl Instr Meth Phys Res A 572 754
[4] Shah K S, Glode J, Klugerman M, Crignano L, Mose W W, EDerenzo S, Weber M J 2003 Nucl Instr Meth Phys Res A 505 76
[5] Masahiro Tsutsumi, Yoshihiko Tanimura 2006 Nucl Instr Meth Phys Res A 557 554
[6] Iltis A, Mayhugh M R, Menge P, Rozsa C M, Selles O, Solovyev V 2006 Nucl Instr Meth Phys Res A 563 359
[7] van Loef E V D, Dorenbos P, van Eijk C W E, Kramer K, Gudel H U 2001 IEEE Trans. Nucl. Sci. 48 341
[8] Ren G H, Pei Y U, Chen X F 2009 Journal of Alloys and Compounds 467 120
[9] Bizarri G, Dorenbos P 2009 J. Phys.: Condens. Matter 21 235605
[10] Wang D Y, Xie P P, Zhang W P, Lou L R, Xia S D, 2001 Acta Phys. Sin. 50 329 (in Chinese) [王殿元, 谢平波, 张蔚萍, 楼立人, 夏上达 2001 50 329]
[11] Kramer K W, Dorenbos P, Gudel H U, van Eijk C W E 2006 J. Mater. Chem. 16 2773
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