Abstract
ZnTe:O powder phosphors were successfully prepared by a dry synthesis process using gaseous doping and etching media. It was found that dry doping by O2 through ball-milling was an effective way to synthesize ZnTe:O powder phosphors and produced a red emission centered at 680 nm with a decay time of 1.1 µs. The emission intensity of dry O2-doped samples was three times more intense than from ZnO-doped samples, possibly due to a more uniform distribution of oxygen substitution on tellurium sites. The samples annealed in a 95% N2/5% H2 forming gas atmosphere exhibited a x-ray luminescent efficiency five times higher than did powders annealed in vacuum or N2 atmosphere. This enhancement was attributed to the removal of surface tellurium oxides. ZnTe:O phosphor screens were prepared with x-ray luminescence efficiencies equivalent to 56% of ZnSe:Cu,Ce,Cl and 76% of Gd2O2S:Tb screens under 17-keV radiation. An x-ray imaging resolution of 2.5 lines/mm was resolved, the same as that measured for commercial ZnSe:Cu,Ce,Cl and Gd2O2S:Tb screens. These results indicate that ZnTe:O is a promising phosphor candidate for synchrotron x-ray imaging applications.
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References
S. Shionoya and W.M. Yen, Phosphor Handbook (Boca Raton, Florida: CRC Press, 1999).
S.E. Ealick, Nat. Struct. Biol. 5, 620 (1998).
I. Naday, E.M. Westbrook, M.L. Westbrook, D.J. Travis, M. Stanton, W.C. Phillips, and J. Xie, Nucl. Instrum. Methods A348, 635 (1994).
I. Naday, S. Ross, E.M. Westbrook, and G. Zentai, Opt. Eng. 37, 1235 (1998).
N. Ban, P. Nissen, J. Hansen, P.B. Moore, and T.A. Steitz, Science 289, 905 (2000).
R. Durst, Y. Diawara, G. Mednikova, T. Thorson, V. Valdna, and C. Summers, Advances in X-ray Scintillator Technology, 13th ESRF Users Meeting, Grenoble, France (2003).
Y. Diawara, R.D. Durst, G. Mednikova, T. Thorson, J. Hiie, and V. Valdna, Proc. SPIE 5198, 119 (2004).
V. Ryzhikov, G. Tamulaitis, N. Starzhinskiy, L. Gal’chinetskii, A. Novickovas, and K. Kazlauskas, J. Lumin. 101, 45 (2003).
W.A. Hendrickson, Science 254, 51 (1991).
M. Inoue, J. Appl. Phys. 55, 1558 (1984).
R.E. Dietz, D.G. Thomas, and J.J. Hopfield, Phys. Rev. Lett. 8, 391 (1962).
J.J. Hopfield, D.G. Thomas, and R.T. Lynch, Phys. Rev. Lett. 17, 312 (1966).
J.L. Merz, Phys. Rev. 176, 961 (1968).
Y. Burki, W. Czaja, V. Capozzi, and P. Schwendimann, J. Phys.: Condens. Mater. 5, 9235 (1993).
C.B. Norris, J. Electron. Mater. 8, 733 (1979).
S. Iida, J. Phys. Soc. Jpn. 32, 142 (1972).
C.B. Norris and H.P. Hjalmarson, J. Electron. Mater. 15, 331 (1986).
D.I. Kennedy and M.J. Russ, J. Phys. Chem. Solids 32, 847 (1971).
Y. Biao, M. Azoulay, M.A. George, A. Burger, W.E. Collins, E. Silberman, C.H. Su, M.E. Volz, F.R. Szofran, and D.C. Gillies, J. Cryst. Growth 138, 219 (1994).
N.N. Loiko, V.M. Konnov, Y.G. Sadofyev, E.I. Makhov, A.S. Trushin, and A.A. Gippius, Phys. Status Solidi B229, 317 (2002).
K. Hayashida, T. Tanaka, M. Nishio, Y. Chang, J. Wang, S. Wang, Q. Guo, and H. Ogawa, J. Cryst. Growth 237–239, 1580 (2002).
V. Valdna, J. Hiie, U. Kallavus, A. Mere, and T. Piibe, J. Cryst. Growth 161, 177 (1996).
Z.T. Kang, H. Menkara, B.K. Wagner, C.J. Summers, and V. Valdna, J. Mater. Res. 20, 2510 (2005).
V.D. Ryzhikov, N.G. Starzhinskiy, L.P. Gal’chinetskii, V.I. Silin, G. Tamulaitis, and E.K. Lisetskaya, Int. J. Inorg. Mater. 3, 1227 (2001).
M.A. Foad, M. Watt, A.P. Smart, C.M.S. Torres, C.D.W. Wilkinson, W. Kuhns, H.P. Wagner, S. Bauers, H. Leiderers, and W. Gebhardts, Semicond. Sci. Technol. 6, A115 (1991).
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Kang, Z.T., Menkara, H., Wagner, B.K. et al. Oxygen-doped ZnTe phosphors for synchrotron X-ray imaging detectors. J. Electron. Mater. 35, 1262–1266 (2006). https://doi.org/10.1007/s11664-006-0252-4
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DOI: https://doi.org/10.1007/s11664-006-0252-4