Journal ArticleDOI
C3N—A 2D Crystalline, Hole-Free, Tunable-Narrow-Bandgap Semiconductor with Ferromagnetic Properties
Siwei Yang,Wei Li,Wei Li,Cai-Chao Ye,Gang Wang,He Tian,Chong Zhu,Peng He,Guqiao Ding,Xiaoming Xie,Xiaoming Xie,Yang Liu,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Zhenhui Kang,Mianheng Jiang,Mianheng Jiang +17 more
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TLDR
Surprisingly, C3 N exhibits a ferromagnetic order at low temperatures (<96 K) when doped with hydrogen, which opens the door for both fundamental basic research and possible future applications.Abstract:
Graphene has initiated intensive research efforts on 2D crystalline materials due to its extraordinary set of properties and the resulting host of possible applications. Here the authors report on the controllable large-scale synthesis of C3 N, a 2D crystalline, hole-free extension of graphene, its structural characterization, and some of its unique properties. C3 N is fabricated by polymerization of 2,3-diaminophenazine. It consists of a 2D honeycomb lattice with a homogeneous distribution of nitrogen atoms, where both N and C atoms show a D6h -symmetry. C3 N is a semiconductor with an indirect bandgap of 0.39 eV that can be tuned to cover the entire visible range by fabrication of quantum dots with different diameters. Back-gated field-effect transistors made of single-layer C3 N display an on-off current ratio reaching 5.5 × 1010 . Surprisingly, C3 N exhibits a ferromagnetic order at low temperatures (<96 K) when doped with hydrogen. This new member of the graphene family opens the door for both fundamental basic research and possible future applications.read more
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Study on Thermal Conduction Mechanism of Graphene-Like Carbon Nitride Structure (C3N)
TL;DR: In this paper , four kinds of C3N with different patterns were constructed, and their thermal conduction mechanism was studied by the non-equilibrium molecular dynamics (NEMD) method.
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Effective modulation of the exotic properties of two-dimensional multifunctional TM2@g-C4N3 monolayers via transition metal permutation and biaxial strain.
TL;DR: In this paper , the exotic physicochemical properties of TM atom (3d, 4d, and 5d) embedded g-C4N3 as a novel class of 2D monolayers were systematically investigated through hierarchical high-throughput screening combined with spin-polarized first-principles calculations.
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Tuning the electrocatalytic CO reduction on bilayer C3N via rotation, translation and metal intercalation
TL;DR: In this paper , a tunable catalyst for CO electrochemical reduction based on the bilayer C3N (b-C3N) via the rotation, translation and transition metal intercalation was proposed.
Journal ArticleDOI
Quantum correction-based molecular dynamic investigation of thermal transport in 2d single-layer c3b and c3n
TL;DR: In this article , the authors used the quantum-corrected non-equilibrium molecular dynamics (MD) simulation to investigate the in-plane thermal conductivity of SLC3N and SLC-3B in a wide temperature range from 150 K to 500 K.
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Two dimensional monolayers TetraHex-CX2 (X = N, P, As, and Sb) with superior electronic, mechanical and optical properties.
TL;DR: In this article , the authors constructed four 2D monolayers TetraHex-CX2 (X = N, P, As, and Sb) using first-principles calculations.
References
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Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
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TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
Journal ArticleDOI
The electronic properties of graphene
TL;DR: In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.
Journal ArticleDOI
A metal-free polymeric photocatalyst for hydrogen production from water under visible light
Xinchen Wang,Kazuhiko Maeda,Arne Thomas,Kazuhiro Takanabe,Gang Xin,Johan M. Carlsson,Kazunari Domen,Markus Antonietti +7 more
TL;DR: It is shown that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor.
Journal ArticleDOI
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Juan Liu,Yang Liu,Naiyun Liu,Yuzhi Han,Xing Zhang,Hui Huang,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Jun Zhong,Zhenhui Kang +10 more
TL;DR: The design and fabrication of a metal-free carbon nanodot–carbon nitride (C3N4) nanocomposite is reported and its impressive performance for photocatalytic solar water splitting is demonstrated.