Twist-angle two-dimensional superlattices and their application in (opto)electronics
Publikation: Bidrag til tidsskrift › Review › Forskning › fagfællebedømt
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Twist-angle two-dimensional superlattices and their application in (opto)electronics. / Xin, Kaiyao; Wang, Xingang; Grove-Rasmussen, Kasper; Wei, Zhongming.
I: Journal of Semiconductors, Bind 43, Nr. 1, 011001, 2022.Publikation: Bidrag til tidsskrift › Review › Forskning › fagfællebedømt
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TY - JOUR
T1 - Twist-angle two-dimensional superlattices and their application in (opto)electronics
AU - Xin, Kaiyao
AU - Wang, Xingang
AU - Grove-Rasmussen, Kasper
AU - Wei, Zhongming
PY - 2022
Y1 - 2022
N2 - Twist-angle two-dimensional systems, such as twisted bilayer graphene, twisted bilayer transition metal dichalcogenides, twisted bilayer phosphorene and their multilayer van der Waals heterostructures, exhibit novel and tunable properties due to the formation of Moire superlattice and modulated Moire bands. The review presents a brief venation on the development of "twistronics" and subsequent applications based on band engineering by twisting. Theoretical predictions followed by experimental realization of magic-angle bilayer graphene ignited the flame of investigation on the new freedom degree, twist-angle, to adjust (opto)electrical behaviors. Then, the merging of Dirac cones and the presence of flat bands gave rise to enhanced light-matter interaction and gate-dependent electrical phases, respectively, leading to applications in photodetectors and superconductor electronic devices. At the same time, the increasing amount of theoretical simulation on extended twisted 2D materials like TMDs and BPs called for further experimental verification. Finally, recently discovered properties in twisted bilayer h-BN evidenced h-BN could be an ideal candidate for dielectric and ferroelectric devices. Hence, both the predictions and confirmed properties imply twist-angle two-dimensional superlattice is a group of promising candidates for next-generation (opto)electronics.
AB - Twist-angle two-dimensional systems, such as twisted bilayer graphene, twisted bilayer transition metal dichalcogenides, twisted bilayer phosphorene and their multilayer van der Waals heterostructures, exhibit novel and tunable properties due to the formation of Moire superlattice and modulated Moire bands. The review presents a brief venation on the development of "twistronics" and subsequent applications based on band engineering by twisting. Theoretical predictions followed by experimental realization of magic-angle bilayer graphene ignited the flame of investigation on the new freedom degree, twist-angle, to adjust (opto)electrical behaviors. Then, the merging of Dirac cones and the presence of flat bands gave rise to enhanced light-matter interaction and gate-dependent electrical phases, respectively, leading to applications in photodetectors and superconductor electronic devices. At the same time, the increasing amount of theoretical simulation on extended twisted 2D materials like TMDs and BPs called for further experimental verification. Finally, recently discovered properties in twisted bilayer h-BN evidenced h-BN could be an ideal candidate for dielectric and ferroelectric devices. Hence, both the predictions and confirmed properties imply twist-angle two-dimensional superlattice is a group of promising candidates for next-generation (opto)electronics.
KW - twist angle
KW - Moire superlattice
KW - two-dimensional
KW - (opto)electronics
KW - FIELD-EFFECT TRANSISTORS
KW - MAGIC-ANGLE
KW - BLACK PHOSPHORUS
KW - ELECTRONIC-PROPERTIES
KW - BILAYER GRAPHENE
KW - MOIRE
KW - SUPERCONDUCTIVITY
KW - TRANSPORT
KW - BEHAVIOR
KW - STATES
U2 - 10.1088/1674-4926/43/1/011001
DO - 10.1088/1674-4926/43/1/011001
M3 - Review
VL - 43
JO - Journal of Semiconductors
JF - Journal of Semiconductors
SN - 1674-4926
IS - 1
M1 - 011001
ER -
ID: 290247636