Abstract
The cathodoluminescence emission spectra of cubic blue-emitting ZnS:Ag, Cl, hexagonal green-emitting (Zn0.675, Cd0.325) S:Ag, Cl as well as hexagonal red-emitting (Zn0.27, Cd0.73) S:Ag, Cl phosphors have been measured at 293, 77 and 4.2 K. The measured spectra of the phosphors exhibited a single broad emission band at 293 K, while they had two emission bands at 77 and 4.2 K. The two emission bands shifted to a lower energy with increase of their corresponding half-widths as the temperature at which the spectra were measured was raised. The time-resolved emission spectra measured showed that the low-energy band also shifted in the lower energy direction during the decay of luminescence, confirming its donor-acceptor (DA) transition nature. The high-energy band decayed faster than the low-energy one and no energy shift occurred during its decay; it was attributed to donor-isoelectronic pair (DI) transition. The lifetimes of 0.625 and 4.2 µsec were estimated for high- and low-energy bands, respectively, in the emission spectra of ZnS:Ag, Cl at 4.2 K.
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References
W. LEVERENZ, “An Introduction to Luminescence of Solids” (Wiley, New York, 1950).
S. SHIONOYA, in “Luminescence of Inorganic Solids”, edited by P. Goldberg (Academic, New York, 1966) p. 205.
D. CURIE and J. S. PRENER, in “Physics and Chemistry of II–VI Compounds”, edited by M. Aven and J. S. Prener (North-Holland, Amsterdam, 1967) p. 434.
W. LEHMAN,J. Electrochem. Soc. 110 (1963) 754.
Idem, ibid.113 (1966) 788.
A. ABDEL-KADER and M. M. ELKHOLY,J. Mater. Sci. 25 (1990) 1128.
K. ERA, S. SHIONOYA and Y. WASHIZAWA,J. Phys. Chem. Solids 29 (1968) 1827.
K. ERA, S. SHIONOYA, Y. WASHIZAWA and H. OHMASTU, ibid.29 (1968) 1843.
K. SATO and M. AOKI,Jpn. J. Appl. Phys. 18 (1979) 705.
A. ABDEL-KADER, F. J. BRYANT and J. H. C. HOGG,Phys. Status Solidi (a)81 (1984) 333.
Idem, Egypt. J. Phys. 16 (1985) 289.
W. VAN GOOL,Philips Res. Repts Suppl. 3 (1961) 1.
M. S. ELMANHARAWY and A. ABDEL-KADER,Rev. Roum. Phys. 24 (1979) 87.
Idem, Acta. Phys. Pol. A56 (1979) 19.
S. ROTHSCHILD,J. Electrochem. Soc. 110 (1963) 28.
J. LAMBE and C. C. KLICK,Phys. Rev. 98 (1955) 909.
H. KAWAI and T. HOSHINA,J. Luminescence 18/19 (1979) 293.
S. ODA and H. KUKIMOTO, ibid.18/19 (1979) 829.
T. HOSHINA and H. KAWAI,Jpn. J. Appl. Phys. 19 (1980) 267.
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Abdel-Kader, A. High-energy emission band nature in ZnS-type phosphors activated with silver and chlorine. J Mater Sci: Mater Electron 1, 57–60 (1990). https://doi.org/10.1007/BF00716019
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DOI: https://doi.org/10.1007/BF00716019