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A blue emitting phosphor Ba2Ca(PO4)2:Eu2+ is synthesized by a high temperature solid state method. Effect of the conditions is inverstigated, such as preparation temperature and time, the ratio of Ba/Ca, and Eu2+ concentration, on the phase and luminescent property. Results show that Ba2Ca(PO4)2 and Ba2Ca(PO4)2:Eu2+ have been achieved by selecting the appropriate conditions, such as the temperature 900/1200 ℃ and the time 4 h. The compound Ba2Ca(PO4)2:Eu2+ produces an asymmetric emission band centered at 454 nm under 343 nm UV excitation. For the 454 nm emission, the excitation spectrum extends from 200 to 450 nm with a peak at 343 nm, and has an obvious excitation band in the range of 350–410 nm. With increasing Eu2+ concentration, there occur the concentration quenching effect and redshift phenomenon. With decreasing ratio of Ba/Ca, there has an obvious enhancement in the green region, and the emission color gradually turns from blue to cyan. It is shown that the Eu2+ ion not only can occupy the Ba2+ site but also the Ca2+ site. Therefore, different luminescence centers of Eu2+ can exist in Ba2Ca(PO4)2, and affect its luminescence.
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Keywords:
- luminescence /
- Ba2Ca(PO4)2：Eu2+
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[1] H?ppe H A 2009 Angew. Chem. Int. Ed. 48 3572
[2] Ye S, Xiao F, Pan Y X, Ma Y Y, Zhang Q Y 2010 Mater. Sci. Eng. R 7 1
[3] Lin C C, Liu R S 2011 J. Phys. Chem. Lett. 2 1268
[4] Brinkley S E, Pfaff N, Denault K A, Zhang Z, (Bert) Hintzen H T 2011 Appl. Phys. Lett. 99 241106
[5] Chen W T, Sheu H S, Liu R S, Attfield J P 2012 J. Am. Chem. Soc. 134 8022
[6] Kim T G, Lee H S, Lin C C, Kim T, Liu R S, Chan T S, Im S J 2010 Appl. Phys. Lett. 96 061904
[7] Zhang X, Lu Z, Meng F, Lu F, Hu L, Xu X, Tang C 2011 Mater. Lett. 66 16
[8] Xia Z, Zhou J, Mao Z 2013 J. Mater. Chem. C 1 5917
[9] Jiao M, Guo N, L W, Jia Y, Lv W, Zhao Q, Shao B, You H 2013 Inorg Chem. 52 10340
[10] Mao J W, Lv S C, Qu X R, He D L, Meng Q Y 2013 Acta Phys. Sin. 62 037803 (in Chinese) [毛金伟, 吕树臣, 曲秀荣, 何冬丽, 孟庆裕2013 62 037803]
[11] Hou J, Jiang W, Fang Y, Huang F 2013 J. Mater. Chem. C 1 5892
[12] Zhong H M, Liu Q, Zhou Y, Zhuang J D, Zhou H 2013 Acta Phys. Sin. 62 087804 (in Chinese)[钟红梅, 刘茜, 周遥, 庄建东, 周虎2013 62 087804]
[13] Liu D, Liang P, Wang L, Xu G T, Liu Y, Li X Y, Dong Q M, Huang J 2013 Acta Phys. Sin. 62 197802 (in Chinese)[刘丹, 梁培, 王乐, 徐国堂, 刘阳, 李晓艳, 董前民, 黄杰2013 62 197802]
[14] Geng D, Shang M, Zhang Y, Lian H, Cheng Z, Lin J 2013 J. Mater. Chem. C 1 2345
[15] Zhu G, Xin S, Wen Y, Wang Q, Que M, Wang Y 2013 RSC. Adv. 3 9311
[16] Zhu P, Zhu Q, Zhu H, Zhao H, Chen B, Zhang Y, Wang X, Di W 2008 Opt. Mater. 30 930
[17] Chiu Y C, Liu W R, Chang C K, Liao C C, Yeh Y T, Jang S M, Chen T M 2010 J. Mater. Chem. 20 1755
[18] Song H J, Yim D K, Roh H S, Cho I S, Kim S J, Jin Y H, Shim H W, Kim D W, Hong K S 2013 J. Mater. Chem. C 1 500
[19] Shang M, Li G, Geng D, Yang D, Kang X, Zhang Y, Lian H, Lin J 2012 J. Phys. Chem. C 116 10222
[20] Wu Y C, Wang D Y, Chen T M, Lee C S, Chen K J, Kuo H C 2011 ACS Appl. Mater. Interfaces 3 3195
[21] Zhang Y, Xia Z, Wu W 2013 J. Am. Ceram. Soc. 96 1043
[22] Yu H, Deng D, Zhou D, Yuan W, Zhao Q, Hua Y, Zhao S, Huang L, Xu S 2013 J. Mater. Chem. C 1 5577
[23] Wu X Y, You H P, Zeng X Q, Hong G Y, Km C H, Pyun C H, Yu B Y, Park C H 2003 Chem. J. Chin. Univer. 24 1 (in Chinese) [吴雪艳, 尤洪鹏, 曾小青, 洪广言, 金昌弘, 卞锺洪, 庾炳容, 朴哲熙2003 高等学校化学学报24 1]
[24] Hong G Y, Zheng X Q 1999 J. Funct. Mater. 30 225 (in Chinese)[洪广言, 曾小青1999 功能材料30 225]
[25] Cao S X, Han T, Tu M J 2011 Acta Phys. Sin. 60 127802 (in Chinese)[曹仕秀, 韩涛, 涂铭旌2011 60 127802]
[26] Li P L, Yang Z P, Wang Z J, Guo Q L 2008 Chin. Phys. B 17 1135
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