TITLE

Light-emission properties in nanocrystalline BaTiO[sub 3]

AUTHOR(S)
Yu, Jian; Jian Yu; Sun, Jinglan; Jinglan Sun; Chu, Junhao; Junhao Chu; Tang, Dingyuan; Dingyuan Tang
PUB. DATE
October 2000
SOURCE
Applied Physics Letters;10/30/2000, Vol. 77 Issue 18
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter reports photoluminescence properties of nanocrystalline BaTiO[sub 3]. Two intense emission bands centered at 543 and 694 nm and a weak one at 574 nm have been observed at room temperature. The change of luminescence peak with different heat treatments correlates to the evolution of Ti[sup 4+] defects in the nanocrystalline BaTiO[sub 3] matrice. The light-emission mechanism is explained within the framework of self-trapped excitons by combining quantum-size confinement and dielectric confinement effects. © 2000 American Institute of Physics.
ACCESSION #
4415307

 

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