This letter investigates the role of postdeposition oxygen treatments upon their luminescent properties by synthesizing films by pulsed laser deposition under different conditions and subjecting them to various postdeposition oxygen treatments. Our results have shown that films grown in 300 mTorr oxygen ambient and cooled in vacuum after the termination of growth exhibit better photoluminescent and cathodoluminescent brightness than those grown in (i) vacuum and cooled in vacuum and (ii) 300 mTorr oxygen and cooled in 2 Torr oxygen. Two possible mechanisms have been proposed to explain these results.
REFERENCES
1.
S. J.
Duclos
, C. D.
Greskovich
, and C. R.
O’Clair
, Mater. Res. Soc. Symp. Proc.
348
, 503
(1994
).2.
K. Ohno, in Phosphor Handbook, edited by S. Shionoya and W. M. Yen (CRC Press, Boca Raton, FL, 1998), pp. 489–498.
3.
K. G.
Cho
, D.
Kumar
, P. H.
Holloway
, and R. K.
Singh
, Appl. Phys. Lett.
73
, 3058
(1998
).4.
D.
Kumar
, M.
Sharon
, R.
Pinto
, P. R.
Apte
, S. P.
Pai
, S. C.
Purandare
, L. C.
Gupta
, and R.
Vijayaraghavan
, Appl. Phys. Lett.
62
, 3522
(1994
).5.
V.
Craciun
, E. S.
Lambers
, N. D.
Bassim
, R. K.
Singh
, and D.
Cracium
, J. Mater. Res.
15
, 488
(2000
).6.
Handbook of X-ray Photoelectron Spectroscopy (Physical Electronics, Eden Prairie, MN, 1992).
7.
H. C.
Swart
, A. P.
Greeff
, P. H.
Holloway
, and G. L. P.
Berning
, Appl. Surf. Sci.
140
, 63
(1998
).8.
L. Ozawa, Cathodoluminescence: Theory and Applications (VCH, New York, 1990).
9.
H. Yamamoto, in Phosphor Handbook, edited by S. Shionoya and W. M. Yen (CRC Press, Boca Raton, FL, 1998), pp. 113–121.
10.
11.
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