Growth of visible-light-responsive ferroelectric SbSI thin films by molecular beam epitaxy

S. Inagaki; M. Nakamura; H. Hatada; R. Nishino; F. Kagawa; Y. Tokura; M. Kawasaki

doi:10.1063/1.5142642

Growth of visible-light-responsive ferroelectric SbSI thin films by molecular beam epitaxy

S. Inagaki, M. Nakamura, H. Hatada, R. Nishino, F. Kagawa, Y. Tokura, M. Kawasaki

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

7 Citations (Scopus)

Abstract

Photoresponsive ferroelectrics are recently under intense study due to their potential application to photovoltaic devices. Antimony sulfoiodide (SbSI) is a prototypical compound that possesses both ferroelectricity and a strong visible-light-response. However, most of the SbSI films reported so far have a polycrystalline structure with a randomly oriented polarization axis. In this study, we have fabricated c-axis textured SbSI thin films through annealing of amorphous films deposited in a molecular beam epitaxy system, employing Sb₂S₃ and SbI₃ sources. The fabricated films are highly uniform and have the polarization axis ordered vertical to the film plane. We have confirmed that the films show a strong visible-light-response and ferroelectricity in accord with bulk samples. These results will stimulate the development of photovoltaics employing narrow bandgap ferroelectric compounds.

Original language	English
Article number	072902
Journal	Applied Physics Letters
Volume	116
Issue number	7
DOIs	https://doi.org/10.1063/1.5142642
Publication status	Published - Feb 18 2020
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/1.5142642

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title = "Growth of visible-light-responsive ferroelectric SbSI thin films by molecular beam epitaxy",

abstract = "Photoresponsive ferroelectrics are recently under intense study due to their potential application to photovoltaic devices. Antimony sulfoiodide (SbSI) is a prototypical compound that possesses both ferroelectricity and a strong visible-light-response. However, most of the SbSI films reported so far have a polycrystalline structure with a randomly oriented polarization axis. In this study, we have fabricated c-axis textured SbSI thin films through annealing of amorphous films deposited in a molecular beam epitaxy system, employing Sb2S3 and SbI3 sources. The fabricated films are highly uniform and have the polarization axis ordered vertical to the film plane. We have confirmed that the films show a strong visible-light-response and ferroelectricity in accord with bulk samples. These results will stimulate the development of photovoltaics employing narrow bandgap ferroelectric compounds.",

author = "S. Inagaki and M. Nakamura and H. Hatada and R. Nishino and F. Kagawa and Y. Tokura and M. Kawasaki",

note = "Funding Information: The authors would like to thank Y. Kaneko, M. Sotome, and N. Ogawa for fruitful discussions. This work was supported by PRESTO JST (No. JPMJPR16R5). Publisher Copyright: {\textcopyright} 2020 Author(s).",

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doi = "10.1063/1.5142642",

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T1 - Growth of visible-light-responsive ferroelectric SbSI thin films by molecular beam epitaxy

AU - Inagaki, S.

AU - Nakamura, M.

AU - Hatada, H.

AU - Nishino, R.

AU - Kagawa, F.

AU - Tokura, Y.

AU - Kawasaki, M.

N1 - Funding Information: The authors would like to thank Y. Kaneko, M. Sotome, and N. Ogawa for fruitful discussions. This work was supported by PRESTO JST (No. JPMJPR16R5). Publisher Copyright: © 2020 Author(s).

PY - 2020/2/18

Y1 - 2020/2/18

N2 - Photoresponsive ferroelectrics are recently under intense study due to their potential application to photovoltaic devices. Antimony sulfoiodide (SbSI) is a prototypical compound that possesses both ferroelectricity and a strong visible-light-response. However, most of the SbSI films reported so far have a polycrystalline structure with a randomly oriented polarization axis. In this study, we have fabricated c-axis textured SbSI thin films through annealing of amorphous films deposited in a molecular beam epitaxy system, employing Sb2S3 and SbI3 sources. The fabricated films are highly uniform and have the polarization axis ordered vertical to the film plane. We have confirmed that the films show a strong visible-light-response and ferroelectricity in accord with bulk samples. These results will stimulate the development of photovoltaics employing narrow bandgap ferroelectric compounds.

AB - Photoresponsive ferroelectrics are recently under intense study due to their potential application to photovoltaic devices. Antimony sulfoiodide (SbSI) is a prototypical compound that possesses both ferroelectricity and a strong visible-light-response. However, most of the SbSI films reported so far have a polycrystalline structure with a randomly oriented polarization axis. In this study, we have fabricated c-axis textured SbSI thin films through annealing of amorphous films deposited in a molecular beam epitaxy system, employing Sb2S3 and SbI3 sources. The fabricated films are highly uniform and have the polarization axis ordered vertical to the film plane. We have confirmed that the films show a strong visible-light-response and ferroelectricity in accord with bulk samples. These results will stimulate the development of photovoltaics employing narrow bandgap ferroelectric compounds.

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Growth of visible-light-responsive ferroelectric SbSI thin films by molecular beam epitaxy

Abstract

All Science Journal Classification (ASJC) codes

UN SDGs

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