Title of article
Intriguing photoconductivity behaviors of SrTiO3−δ thin films with Pt contacts
Author/Authors
Sung، نويسنده , , K.D. and Park، نويسنده , , Y.A. and Ryu، نويسنده , , H.-R. and Hur، نويسنده , , N. and Jung، نويسنده , , J.H.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
3
From page
1784
To page
1786
Abstract
The photoconductivity spectra of oxygen-deficient SrTiO3−δ thin films with Pt contacts show two intriguing peaks at and above the band gap (∼3.2 eV). The first (second) peak, located at (above) the band gap, shows hysteretic (linear) photocurrent–voltage characteristics with a long (short) relaxation time. In addition, the first (second) peak shows a weak (strong) dependence on the surface treatment of the substrate as well as the surrounding atmosphere. These results have been discussed in terms of the Schottky contact, built-in voltage, and trapping/recombination process.
Keywords
A. Oxygen-deficient SrTiO3?? thin films , B. Pulsed Laser Deposition , D. Photoconductivity , D. Built-in voltage
Journal title
Solid State Communications
Serial Year
2011
Journal title
Solid State Communications
Record number
1792804
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