期刊
NANO LETTERS
卷 14, 期 9, 页码 5224-5228出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl502183j
关键词
BiFeO3; strain; enhanced conductivity; persistent photoconductivity; thermally stimulated current
类别
资金
- DFG [SFB 762]
- IMPRS (International Max Planck Research School, Halle, Germany)
- Royal Society via Wolfson Award
A drastic change in the conductivity of strained BiFeO3 (BFO) films is observed after illuminating them with above-band gap light. This has been termed as persistent photoconductivity. The enhanced conductivity decays exponentially with time. A trapping character of the sub-band levels and their subsequent gradual emptying is proposed as a possible mechanism.
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