Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization

Hye Jin Jin; Jayeong Kim; Yejin Kim; Seokhyun Yoon; Yangjin Lee; Kwanpyo Kim; William Jo

doi:10.1039/c9tc05621a

Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization

Hye Jin Jin, Jayeong Kim, Yejin Kim, Seokhyun Yoon, Yangjin Lee, Kwanpyo Kim, William Jo

Department of Physics

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

6 Citations (Scopus)

Abstract

The interplay between free and bound charges in two-dimensional (2D) semiconductor/ferroelectric oxide structures is responsible for the unique opto-electrical properties of these structures. In this study, we vertically combined the 2D layered semiconductors MoS₂ (n-type) and WSe₂ (p-type) with a ferroelectric oxide (PbTiO₃) and found that a ferroelectric polarization induced accumulation or depletion in the layered materials. The heterostructures exhibited polarization-dependent charge distribution and pinched hysteresis. We show that polarization at the interface promoted efficient charge separation of photo-generated carriers in the 2D layers. Optical control of electrical transport was effectively achieved in the MoS₂ layers. This study potentially opens up new applications for semiconductor/ferroelectric systems in electronic devices.

Original language	English
Pages (from-to)	3724-3729
Number of pages	6
Journal	Journal of Materials Chemistry C
Volume	8
Issue number	11
DOIs	https://doi.org/10.1039/c9tc05621a
Publication status	Published - 2020 Mar 21

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2018R1A2B2003607 and 2016R1D1A1B01009032) and the Ministry of Education (NRF-2018R1A6A1A03025340).

Publisher Copyright:
© 2020 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Chemistry

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title = "Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization",

abstract = "The interplay between free and bound charges in two-dimensional (2D) semiconductor/ferroelectric oxide structures is responsible for the unique opto-electrical properties of these structures. In this study, we vertically combined the 2D layered semiconductors MoS2 (n-type) and WSe2 (p-type) with a ferroelectric oxide (PbTiO3) and found that a ferroelectric polarization induced accumulation or depletion in the layered materials. The heterostructures exhibited polarization-dependent charge distribution and pinched hysteresis. We show that polarization at the interface promoted efficient charge separation of photo-generated carriers in the 2D layers. Optical control of electrical transport was effectively achieved in the MoS2 layers. This study potentially opens up new applications for semiconductor/ferroelectric systems in electronic devices.",

author = "Jin, {Hye Jin} and Jayeong Kim and Yejin Kim and Seokhyun Yoon and Yangjin Lee and Kwanpyo Kim and William Jo",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2018R1A2B2003607 and 2016R1D1A1B01009032) and the Ministry of Education (NRF-2018R1A6A1A03025340). Publisher Copyright: {\textcopyright} 2020 The Royal Society of Chemistry.",

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T1 - Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization

AU - Jin, Hye Jin

AU - Kim, Jayeong

AU - Kim, Yejin

AU - Yoon, Seokhyun

AU - Lee, Yangjin

AU - Kim, Kwanpyo

AU - Jo, William

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2018R1A2B2003607 and 2016R1D1A1B01009032) and the Ministry of Education (NRF-2018R1A6A1A03025340). Publisher Copyright: © 2020 The Royal Society of Chemistry.

PY - 2020/3/21

Y1 - 2020/3/21

N2 - The interplay between free and bound charges in two-dimensional (2D) semiconductor/ferroelectric oxide structures is responsible for the unique opto-electrical properties of these structures. In this study, we vertically combined the 2D layered semiconductors MoS2 (n-type) and WSe2 (p-type) with a ferroelectric oxide (PbTiO3) and found that a ferroelectric polarization induced accumulation or depletion in the layered materials. The heterostructures exhibited polarization-dependent charge distribution and pinched hysteresis. We show that polarization at the interface promoted efficient charge separation of photo-generated carriers in the 2D layers. Optical control of electrical transport was effectively achieved in the MoS2 layers. This study potentially opens up new applications for semiconductor/ferroelectric systems in electronic devices.

AB - The interplay between free and bound charges in two-dimensional (2D) semiconductor/ferroelectric oxide structures is responsible for the unique opto-electrical properties of these structures. In this study, we vertically combined the 2D layered semiconductors MoS2 (n-type) and WSe2 (p-type) with a ferroelectric oxide (PbTiO3) and found that a ferroelectric polarization induced accumulation or depletion in the layered materials. The heterostructures exhibited polarization-dependent charge distribution and pinched hysteresis. We show that polarization at the interface promoted efficient charge separation of photo-generated carriers in the 2D layers. Optical control of electrical transport was effectively achieved in the MoS2 layers. This study potentially opens up new applications for semiconductor/ferroelectric systems in electronic devices.

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DO - 10.1039/c9tc05621a

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JF - Journal of Materials Chemistry C

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Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization

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