A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect

doi:10.1126/science.aaz9146

GSTDTAP > 气候变化

DOI	10.1126/science.aaz9146
	A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect
	Takatoshi Akamatsu; Toshiya Ideue; Ling Zhou; Yu Dong; Sota Kitamura; Mao Yoshii; Dongyang Yang; Masaru Onga; Yuji Nakagawa; Kenji Watanabe; Takashi Taniguchi; Joseph Laurienzo; Junwei Huang; Ziliang Ye; Takahiro Morimoto; Hongtao Yuan; Yoshihiro Iwasa
	2021-04-02
发表期刊	Science
出版年	2021
英文摘要	Many properties can emerge at the interface of van der Waals materials created by rotating the layers of a single material or by creating heterointerfaces between different materials. Akamatsu et al. formed an interface that intentionally broke in-plane inversion symmetry by combining crystals of tungsten diselenide with threefold rotational symmetry and black phosphorus with twofold rotational symmetry. This interface creates in-plane electronic polarization that results in a spontaneous photovoltaic effect only along the polarization direction. This effect was explained in terms of a shift current mechanism. Science , this issue p. [68][1] Van der Waals interfaces can be formed by layer stacking without regard to lattice constants or symmetries of individual building blocks. We engineered the symmetry of a van der Waals interface of tungsten selenide and black phosphorus and realized in-plane electronic polarization that led to the emergence of a spontaneous photovoltaic effect. Spontaneous photocurrent was observed along the polar direction and was absent in the direction perpendicular to it. The observed spontaneous photocurrent was explained by a quantum-mechanical shift current that reflects the geometrical and topological electronic nature of this emergent interface. The present results offer a simple guideline for symmetry engineering that is applicable to a variety of van der Waals interfaces. [1]: /lookup/doi/10.1126/science.aaz9146
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/321137
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Takatoshi Akamatsu,Toshiya Ideue,Ling Zhou,et al. A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect[J]. Science,2021.
APA	Takatoshi Akamatsu.,Toshiya Ideue.,Ling Zhou.,Yu Dong.,Sota Kitamura.,...&Yoshihiro Iwasa.(2021).A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect.Science.
MLA	Takatoshi Akamatsu,et al."A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect".Science (2021).