Bulk and domain-wall effects in ferroelectric photovoltaics

Hiroki Matsuo; Yuuki Kitanaka; Ryotaro Inoue; Yuji Noguchi; Masaru Miyayama; Takanori Kiguchi; Toyohiko J. Konno

doi:10.1103/PhysRevB.94.214111

Bulk and domain-wall effects in ferroelectric photovoltaics

Hiroki Matsuo, Yuuki Kitanaka, Ryotaro Inoue, Yuji Noguchi, Masaru Miyayama, Takanori Kiguchi, Toyohiko J. Konno

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We investigate the photovoltaic (PV) effects in ferroelectrics based on the polar structure in domains and the intrinsic symmetry breaking of ferroelastic domain walls (DWs). A comprehensive analysis for BiFeO3 films with the single-domain and 71° domain structures reveals a major contribution of the DWs superimposed on the bulk PV effect, which can explain the enhanced PV response in the multidomain film exhibiting photovoltages greater than the band gap. Our methodology can reveal the contributions of the bulk PV and the DW-PV effects quantitatively and uncover a design strategy for enhancing ferroelectric photovoltaics.

Original language	English
Article number	214111
Journal	Physical Review B
Volume	94
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.94.214111
Publication status	Published - 2016 Dec 19

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Bulk and domain-wall effects in ferroelectric photovoltaics",

abstract = "We investigate the photovoltaic (PV) effects in ferroelectrics based on the polar structure in domains and the intrinsic symmetry breaking of ferroelastic domain walls (DWs). A comprehensive analysis for BiFeO3 films with the single-domain and 71° domain structures reveals a major contribution of the DWs superimposed on the bulk PV effect, which can explain the enhanced PV response in the multidomain film exhibiting photovoltages greater than the band gap. Our methodology can reveal the contributions of the bulk PV and the DW-PV effects quantitatively and uncover a design strategy for enhancing ferroelectric photovoltaics.",

author = "Hiroki Matsuo and Yuuki Kitanaka and Ryotaro Inoue and Yuji Noguchi and Masaru Miyayama and Takanori Kiguchi and Konno, {Toyohiko J.}",

note = "Funding Information: This research is supported by JSPS through Grant-in-Aid for JSPS Fellows (14J04693), partly by JSPS KAKENHI Grant No. 26249094, the Center for Integrated Nanotechnology at Tohoku University, and also the Nanotechnology Network Project of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

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AU - Matsuo, Hiroki

AU - Kitanaka, Yuuki

AU - Inoue, Ryotaro

AU - Noguchi, Yuji

AU - Miyayama, Masaru

AU - Kiguchi, Takanori

AU - Konno, Toyohiko J.

N1 - Funding Information: This research is supported by JSPS through Grant-in-Aid for JSPS Fellows (14J04693), partly by JSPS KAKENHI Grant No. 26249094, the Center for Integrated Nanotechnology at Tohoku University, and also the Nanotechnology Network Project of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan. Publisher Copyright: © 2016 American Physical Society.

PY - 2016/12/19

Y1 - 2016/12/19

N2 - We investigate the photovoltaic (PV) effects in ferroelectrics based on the polar structure in domains and the intrinsic symmetry breaking of ferroelastic domain walls (DWs). A comprehensive analysis for BiFeO3 films with the single-domain and 71° domain structures reveals a major contribution of the DWs superimposed on the bulk PV effect, which can explain the enhanced PV response in the multidomain film exhibiting photovoltages greater than the band gap. Our methodology can reveal the contributions of the bulk PV and the DW-PV effects quantitatively and uncover a design strategy for enhancing ferroelectric photovoltaics.

AB - We investigate the photovoltaic (PV) effects in ferroelectrics based on the polar structure in domains and the intrinsic symmetry breaking of ferroelastic domain walls (DWs). A comprehensive analysis for BiFeO3 films with the single-domain and 71° domain structures reveals a major contribution of the DWs superimposed on the bulk PV effect, which can explain the enhanced PV response in the multidomain film exhibiting photovoltages greater than the band gap. Our methodology can reveal the contributions of the bulk PV and the DW-PV effects quantitatively and uncover a design strategy for enhancing ferroelectric photovoltaics.

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Bulk and domain-wall effects in ferroelectric photovoltaics

Abstract

ASJC Scopus subject areas

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