✦ LIBER ✦

Photoluminescence of high energy Ar+-irradiated SrTiO3 single crystal

✍ Scribed by K.D. Sung; Ravi Kumar; Abhinav Pratap Singh; C.S. Kim; K.J. Yee; J.H. Jung

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 299 KB
Volume: 405
Category: Article
ISSN: 0921-4526
DOI: 10.1016/j.physb.2010.03.036

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✦ Synopsis

We report the structural and photoluminescence characteristics of a high energy Ar + -irradiated SrTiO 3 single crystal. High resolution X-ray reciprocal space mapping, cross-section scanning electron microscopy and photoluminescence measurements suggest that thick amorphous and oxygen-deficient SrTiO 3 layers are formed after irradiation. Due to the highly accelerated Ar + ( $ 100 keV), electrical conductivity of the oxygen-deficient SrTiO 3 layer seems to be highly reduced, which results in the absence of 440 nm (blue-light) emission at 300 K, and broad and weak 380 nm emission at 20 K.

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