Anisotropic optical and electronic properties of two-dimensional layered germanium sulfide

Nano Research ◽  
2016 ◽  
Vol 10 (2) ◽  
pp. 546-555 ◽  
Author(s):  
Dezhi Tan ◽  
Hong En Lim ◽  
Feijiu Wang ◽  
Nur Baizura Mohamed ◽  
Shinichiro Mouri ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Two Dimensional ◽  
Germanium Sulfide ◽  
Optical And Electronic Properties

scholarly journals Optical and Electronic Properties of Two-Dimensional Layered Materials

Nanophotonics ◽  
2017 ◽  
Vol 6 (2) ◽  
pp. 479-493 ◽  
Author(s):  
Marco Bernardi ◽  
Can Ataca ◽  
Maurizia Palummo ◽  
Jeffrey C. Grossman
Keyword(s):  
Electronic Properties ◽  
Layered Materials ◽  
Two Dimensional ◽  
Optical And Electronic Properties

scholarly journals MXenes: focus on optical and electronic properties and corresponding applications

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1601-1620
Author(s):  
Yifan Wang ◽  
Yanheng Xu ◽  
Menglei Hu ◽  
Han Ling ◽  
Xi Zhu
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Electronic Properties ◽  
Gas Separation ◽  
2D Materials ◽  
Two Dimensional ◽  
Metal Carbides ◽  
Research Groups ◽  
Transition Metal Carbides ◽  
Optical And Electronic Properties

AbstractThe discovery of graphene, the first two-dimensional (2D) material, has caused an upsurge, as this kind of material revealed a tremendous potential of application in areas such as energy storage, electronics, and gas separation. MXenes are referred to as a family of 2D transition metal carbides, carbonitrides, and nitrides. After the synthesis of Ti3C2 from Ti3AlC2 in 2011, about 30 new compositions have been reported. These materials have been widely discussed, synthesized, and investigated by many research groups, as they have many advantages over traditional 2D materials. This review covers the structures of MXenes, discusses various synthesis routines, analyzes the properties, especially optical and electronic properties, and summarizes their applications and potential, which may give readers an overview of these popular materials.

scholarly journals Design two-dimensional halide perovskite composites for optoelectronic applications and beyond

2021 ◽  
Author(s):  
Tao Song ◽  
Qing-xiu Ma ◽  
Qiang Wang ◽  
Hao-Li Zhang
Keyword(s):  
Electronic Properties ◽  
Two Dimensional ◽  
Information Display ◽  
Optical And Electronic Properties ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Optoelectronic Applications ◽  
Energy Information

Two-dimensional (2D) halide perovskites have attracted ever-increasing attention because of their unique optical and electronic properties that result into versatile applications in the fields of energy, information, display and lighting,...

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

Electronic properties of quasi two-dimensional transition metals chalcogenides with low-dimensional magnetism

Doklady BGUIR ◽  
2020 ◽  
Vol 18 (7) ◽  
pp. 87-95
Author(s):  
M. S. Baranava ◽  
P. A. Praskurava
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Exchange Interaction ◽  
Electronic Properties ◽  
Metal Atom ◽  
Transition Metal Atom ◽  
Two Dimensional ◽  
Transition Metal Atoms ◽  
Ground Magnetic ◽  
Low Dimensional

The search for fundamental physical laws which lead to stable high-temperature ferromagnetism is an urgent task. In addition to the already synthesized two-dimensional materials, there remains a wide list of possible structures, the stability of which is predicted theoretically. The article suggests the results of studying the electronic properties of MAX3 (M = Cr, Fe, A = Ge, Si, X = S, Se, Te) transition metals based compounds with nanostructured magnetism. The research was carried out using quantum mechanical simulation in specialized VASP software and calculations within the Heisenberg model. The ground magnetic states of twodimensional MAX3 and the corresponding energy band structures are determined. We found that among the systems under study, CrGeTe3 is a semiconductor nanosized ferromagnet. In addition, one is a semiconductor with a bandgap of 0.35 eV. Other materials are antiferromagnetic. The magnetic moment in MAX3 is localized on the transition metal atoms: in particular, the main one on the d-orbital of the transition metal atom (and only a small part on the p-orbital of the chalcogen). For CrGeTe3, the exchange interaction integral is calculated. The mechanisms of the formation of magnetic order was established. According to the obtained exchange interaction integrals, a strong ferromagnetic order is formed in the semiconductor plane. The distribution of the projection density of electronic states indicates hybridization between the d-orbital of the transition metal atom and the p-orbital of the chalcogen. The study revealed that the exchange interaction by the mechanism of superexchange is more probabilistic.

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