Hydrothermal Preparation and Optical Properties of ZnS∶Cu,Al Nanocrystals Excited by X-ray

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (4): 644.

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Hydrothermal Preparation and Optical Properties of ZnS∶Cu,Al Nanocrystals Excited by X-ray

XIN Mei^1,2*, CAO Wang-He¹

1. Optoelectronic Technology Institute, Dalian Maritime University, Dalian 116026, China;
2. Physics Department, College of Science, Dalian Nationalities University, Dalian 116600, China

Received:2009-08-17 Online:2010-04-10 Published:2010-04-10
Contact: XIN Mei. E-mail: xinmei_dl@126.com
Supported by:
国家自然科学基金(批准号: 10374011)和大连民族学院青年基金项目(批准号: 2008A207)资助.

Abstract

Abstract:

ZnS∶Cu, Al nanocrystals were hydrothermally prepared at 200 ℃ and their photoluminescence(PL) and X-ray excited luminescence(XEL) properties were investigated. The effect of further annealing was also studied in detail. The average gain size of the samples with n(Cu)/n(Zn)=3×10^-4 and n(Cu)/n(Al)=2, which was directly hydrothermal-treated at 200 ℃ for 12 h, is about 15 nm; the spherical-like nanocrystals with well dispersity and narrow gain size distribution show cubic structure. The PL and XEL spectra of all of the samples show a broad emission band. The maximum PL and XEL intensities are observed for sample with n(Cu)/n(Zn)=3×10-4 and n(Cu)/n(Al)=0.5. The XEL peak center is at about 470 nm. In this condition, the XEL intensity of the sample which was hydrothermally treated at 200 ℃ for 3 h then annealed in Ar at 800 ℃ for 1 h is enhanced and the peak is located at 520 nm. In the meantime, the XEL intensity is about eight times by comparison with that of the samples without annealing. The particles′ agglomerate size is about 200—500 nm and roughly spherical particles show pure hexagonal structure. The samples with highly luminescence efficiencies and the smaller size could enhance the resolution of imaging systems. By comparing the PL and XEL spectra, the luminescence mechanism and different excitation mechanism of PL and XEL and effect of annealing on XEL were also discussed.

Key words: ZnS∶Cu, Al; Nanostructure; Hydrothermal method; Photoluminescence; X-ray excited luminescence; Annealing

TrendMD:

XIN Mei*, CAO Wang-He. Hydrothermal Preparation and Optical Properties of ZnS∶Cu,Al Nanocrystals Excited by X-ray[J]. Chem. J. Chinese Universities, 2010, 31(4): 644.

References

[1]Moharial S. V.. Bull. Mater. Sci.[J], 1994, 17: 25—33
[2]Brixner L. H.. Mater. Chem. Phys.[J], 1987, 16: 253—281
[3]Issler S. L., Torardi C. C.. J. Alloys. Compd.[J], 1995, 229: 54—65
[4]Kandarakis I., Cavouras D., Panayiotakis G. S., et al.. Phys. Med. Biol.[J], 1997, 42: 1351—1373
[5]Kandarakis I., Cavouras D., Nomicos C. D., et al.. Nucl. Instrum. Methods. Phys. Res. Sect. B[J], 2001, 179: 215—224
[6]Kandarakis I., Cavouras D., Nikolopoulos D., et al.. Rad. Meas.[J], 2005, 39(3): 263—275
[7]Qi L., Lee B. I., Kim J. M., et al.. J. Lumin.[J], 2003, 104: 261—266
[8]Corrado C., Jiang Y., Oba F., et al.. J. Phys. Chem. A[J], 2009, 113(16): 3830—3839
[9]WANG Zhi-Peng(王志鹏)., LI Xiao-Dong(李晓东), LUO Qun(罗群), et al.. Chem. J. Chinese Universities(高等学校化学学报)[J], 2006, 27: 527—530
[10]JIAN Wen-Ping(管文平)., ZHANG Da-Wei(张大巍), WANG Ling-Ling(王凌凌), et al.. Chem. J. Chinese Universities(高等学校化学学报)[J], 2006, 27(12): 2340—2343
[11]Wang X. F., Xu J. J., Chen H. Y.. J. Phys. Chem. C.[J], 2008, 112: 17581—17585
[12]Luo X. X., Cao W. H., Zhou L. X.. J. Lumin.[J], 2007, 122—123: 812—815
[13]XIN Mei(新梅), CAO Wang- He(曹望和). Journal of Functional Materials(功能材料)[J], 2009, 40(2): 328—331
[14]XU Rong-Hui(许荣辉), WANG Yong-Xian(汪勇先), JIA Guang-Qiang(贾广强), et al.. Chem. J. Chinese Universities(高等学校化学学报)[J], 2007, 28(2): 217—219
[15]Yue G. H., Yan P. X., An D. Y., et al.. Appl. Phys.[J], 2006, A84: 409—412
[16]Chen Y. Y., Duh J. G., Chiou B. S., et al.. J. Thin Solid Films[J], 2001, 392: 50—55
[17]Lu H. Y., Chu S. Y.. J. Crystal Growth[J], 2004, 265: 476—481
[18]ZHANG Xiao-Bo(张小波), SONG Hong-Wei(宋宏伟), YU Li-Xin(于立新), et al.. Chinese Journal of Luminescence(发光学报)[J], 2004, 25(1): 67—71
[19]Zhang X. B., Song H. W., Yu L. X., et al.. J. Lumin.[J], 2006, 118: 251—256
[20]Sang W. B., Qian Y. B., Min J. H., et al.. Solid State Commun.[J], 2002, 121: 475—478
[21]Lee J. C., Park D. H.. Mater. Lett.[J], 2003, 57: 2872—2878
[22]Manzoor K., Vadera S. R., Kumar N., et al.. Mater. Chem. Phys.[J], 2003, 82: 718—725
[23]Yang P., Song C. F., Lü M. K., et al.. J. Phys. Chem. Solids[J], 2002, 63: 639—643
[24]XU Xu-Rong(徐叙瑢), SU Mian-Zeng(苏勉曾). Luminescence and Luminescence Materials(发光学与发光材料)[M], Beijing: Chemical Industry Press, 2004: 466—468
[25]XIN Mei(新梅), CAO Wang-He(曹望和). Spectroscopy and Spectral Analysis(光谱学与光谱分析)[J], 2009, 29(8): 2272—2275
[26]Sugimoto T., Wu S., Itoh H., et al.. J. Colloid Interface Sci.[J], 2003, 257: 47—55

Hydrothermal Preparation and Optical Properties of ZnS∶Cu,Al Nanocrystals Excited by X-ray

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