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The effect of alloying on the band engineering of two-dimensional transition metal dichalcogenides

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成果类型:
期刊论文
作者:
Dong, Jiansheng;Zhao, Yipeng;Ouyang, Gang*
通讯作者:
Ouyang, Gang
作者机构:
[Dong, Jiansheng; Ouyang, Gang; Zhao, Yipeng] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Minist Educ, Synerget Innovat Ctr Quantum Effects & Applicat S, Changsha 410081, Hunan, Peoples R China.
通讯机构:
[Ouyang, Gang] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Minist Educ, Synerget Innovat Ctr Quantum Effects & Applicat S, Changsha 410081, Hunan, Peoples R China.
语种:
英文
期刊:
Physica E: Low-dimensional Systems and Nanostructures
ISSN:
1386-9477
年:
2019
卷:
105
页码:
90-96
文献类别:
WOS:Article
所属学科:
WOS学科类别:Nanoscience & Nanotechnology;Physics, Condensed Matter
入藏号:
基金类别:
National Natural Science Foundation of China [11574080]
机构署名:
本校为第一且通讯机构
院系归属:
物理与信息科学学院
摘要:
In order to clarify the alloying effect on the band engineering in two-dimensional transition metal dichalcogenides (2D-TMDs) at the atomic level, we present a quantitative study to address a deeper insight on the relationship between the bond identities and band shift based on the bond relaxation mechanism and valance-force-field approach. We find the interaction parameter in 2D-TMDs alloys could be obtained from the lattice distortion energy and further reveal the bowing mechanism of composition tunable bandgap in 2D-TMDs. Our results show that the composition-dependent band shift is in good agreement with the available evidence, which suggest the tunable electronic properties of 2D-TMD alloys that realized by modulating the chemical composition could be helpful for nanoelectronic applications.
参考文献:
Chang CH, 2013, PHYS REV B, V88, DOI 10.1103/PhysRevB.88.195420
Chang JW, 2014, J APPL PHYS, V115, DOI 10.1063/1.4866872
Chen YF, 2013, ACS NANO, V7, P4610, DOI 10.1021/nn401420h
Conley HJ, 2013, NANO LETT, V13, P3626, DOI 10.1021/nl4014748
Defo RK, 2016, PHYS REV B, V94, DOI 10.1103/PhysRevB.94.155310

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