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Combustion Synthesis and Spectra Characteristic of Gd2O2S:Tb3+ and La2O2S:Eu3+ X-ray Phosphors

Published online by Cambridge University Press:  03 March 2011

Tian Xia ,
Wang-He Cao ,
Xi-Xian Luo  and
Ying Tian
Tian Xia*
Affiliation:
Opto-Electronic Technology Institute, Dalian Maritime University, Liaoning Dalian 116026, People’s Republic of China
Wang-He Cao
Affiliation:
Opto-Electronic Technology Institute, Dalian Maritime University, Liaoning Dalian 116026, People’s Republic of China
Xi-Xian Luo
Affiliation:
Opto-Electronic Technology Institute, Dalian Maritime University, Liaoning Dalian 116026, People’s Republic of China
Ying Tian
Affiliation:
Opto-Electronic Technology Institute, Dalian Maritime University, Liaoning Dalian 116026, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: xthd80@163.com.
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Abstract

X-ray phosphors of Gd2O2S:Tb3+ and La2O2S:Eu3+ were synthesized by combustion reactions. The samples were characterized by x-ray diffraction (XRD), scanning electronic microscope (SEM), photoluminescence (PL), and x-ray excited luminescence (XEL) spectra. XRD results revealed pure oxy-sulfide phases when the sintering temperatures were no more than 500 °C, and the mean particle sizes were about 20 nm. While the sintering temperatures became higher, oxy-sulfate phases were present. SEM results illustrated a loose, porous agglomeration and a continuous three-dimensional network structure; PL spectra showed the characteristic emission of rare-earth activation ions. To our satisfaction, the PL intensities were nearly the same as some commercial x-ray phosphors. XEL spectra revealed the same characteristic emission, although their luminescence principles were different from those of the PL spectra. In addition, because absorption coefficients of these samples for x-ray and doped concentrations doped of activation ions were different, their light emission intensities and efficiencies also varied.

Keywords

Combustion synthesis

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Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 9 , September 2005 , pp. 2274 - 2278
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1Ronda, C.R., Justel, T. and Nikol, H.: Rare earth phosphors. Fund. Appl. 275–277, 669 (1998).Google Scholar
2Shionoya, S. and Yen, M.W.: Phosphor Handbook (CRC Press, Boca Raton, FL, 1998), p. 30.Google Scholar
3Kang, C.Y., Park, B.S., Lenggoro, W.I. and Okuyama, K.: Gd2O3:Eu phosphor particles with sphericity, submicron size and non-aggregation characteristics. J. Phys. Chem. Solids 60, 379 (1999).CrossRefGoogle Scholar
4Ravichandran, D., Roy, R. and White, B.W.: Low-temperature synthesis and particle-size control in yttrium-based phosphors. J. Soc. Inf. Display 5, 107 (1997).CrossRefGoogle Scholar
5Ihara, M., Igarashi, T., Kusunoki, T. and Ohno, K.: Cathodoluminescence and photoluminescence of nanocrystal phosphors. J. Electrochem. Soc. H72, 149 (2002).Google Scholar
6Bang, J., Abboudi, M., Abrams, B. and Holloway, P.H.: Combustion synthesis of Eu, Tb, and Tm doped Ln2O2S(Ln =Y, La, Gd) phosphors. J. Luminescence 106, 177 (2004).CrossRefGoogle Scholar
7Qinghong, Z., Lian, G. and Jingkun, G.: Effects of calcination on the photocatalytic properties of nanosized TiO2 powders prepared by TiCl4 hydrolysis. J. Appl. Catal. B 26(3), 207 (2000).Google Scholar
8Ou, Y., Fang, P. and Tang, B.: Study on energy transfer of Y2O2S:Tb nanocrystals. Chin. Rare Metal Mater. Eng. 32(7), 522 (2003).Google Scholar
9Li, B., Shi, Y.H. and Shun, S.J.: Photoluminescence of Tb3+, Ce3+ in Al6Si2O13. Chin. J. Jilin Univ. Nat. Sci. 3, 87 (1996).Google Scholar
10Zu, C.K. and Chen, J.: Study on luminescence properties of Tb3+-activated silicate glasses and its application as x-ray conversion screens. J. Chin. Silicate 32(3), 283 (2004).Google Scholar
11Li, Q.H., Peng, Y.A., Liu, L.M., Zhu, X.Y. and Lei, C.H.: Luminescent characteristics of Tb3+ in (LaO)3BO3 host. Chin. J. Spectrosc. Lab. 18(1), 17 (2001).Google Scholar
12Fang, R.C.: Solid Spectroscopy (Chinese Science and Technology University Press, Hefei, People’s Republic ofChina, 2003), p. 138.Google Scholar