Band alignment of two-dimensional h-BN/MoS2 van der Waals heterojunction measured by X-ray photoelectron spectroscopy

Band alignment of two-dimensional h-BN/MoS2 van der Waals heterojunction measured by X-ray photoelectron spectroscopy
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X 射线光电子能谱测量二维 h-BN/MoS2 范德华异质结的能带排列

DOI:
10.1016/j.jallcom.2020.155108
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发表时间:
2020-09
影响因子:
6.2
通讯作者:
Wenge Yang
Wenge Yang
中科院分区:
材料科学2区
文献类型:
--
作者:
Shu’an Xing;Guijuan Zhao;Jie Wang;Yan Xu;Zhixin Ma;Xunshuan Li;Jianhong Yang;Guipeng Liu;Wenge Yang

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制备了二维h-BN/MoS 2货车德瓦尔斯异质结,该异质结由h-BN和MoS 2单层通过货车德瓦尔斯力结合而成。用X射线光电子能谱(XPS)测量了h-BN/MoS_2异质结的价带偏移(VBO)。测得的VBO为0.24 ± 0.15 eV,导带偏移(CBO)为3.99 ± 0.15 eV,表明h-BN/MoS_2异质结具有I型能带取向。安德森的亲和法则验证了VBO测量结果的准确性。
The two-dimensional h-BN/MoS2van der Waals heterojunction, was fabricated, and is stacked by h-BN and MoS2monolayers, which are combined together by van der Waals forces. We have measured the valence band offset (VBO) of h-BN/MoS2heterojunction by X-ray photoelectron spectroscopy (XPS) experimentally. The measurement result of VBO is 0.24 ± 0.15 eV and the conduction band offset (CBO) is calculated to be 3.99 ± 0.15 eV, revealing a type-I band alignment of h-BN/MoS2heterojunction. Anderson’s affinity rule has verified the accuracy of the measurement result of VBO.
DOI: 10.1038/s43586-022-00151-5
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