TITLE

Photoluminescence of pyrochlore phase in SrBi[sub 2]Ta[sub 2]O[sub 9] thin films

AUTHOR(S)
Wang, Y. P.; Ning, H. F.; Zhou, L.; Shen, J. K.; Liu, Z. G.
PUB. DATE
July 2003
SOURCE
Applied Physics Letters;7/28/2003, Vol. 83 Issue 4, p743
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
SrBi[sub;2]Ta[sub;2]O[sub;9] thin films were prepared by pulsed laser deposition at different substrate temperatures. Photoluminescence (PL) has been detected at room temperature from the pyrochlore phase in the SrBi[sub;2]Ta[sub;2]O[sub;9] film deposited at 850 ?C. The PL shows five luminescence bands of 330, 365, 407, 490, and 600 nm. And the PL excitation shows six excitation bands of 278, 330, 365, 407, 490, and 600 nm. The one-to-one correspondence of PL and PL excitation spectra reveals a band-to-band (excitation and a multienergy-gap structure in the pyrochlore phase in SrBi[sub;2]Ta[sub;2]O[sub;9] films.
ACCESSION #
10331068

 

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