scholarly journals Toward Large-Scale Ga2O3 Membranes via Quasi-Van Der Waals Epitaxy on Epitaxial Graphene Layers

2021 ◽  
Author(s):  
Jung-Hong Min ◽  
Kuang-Hui Li ◽  
Yong-Hyeon Kim ◽  
Jung-Wook Min ◽  
Chun Hong Kang ◽  
...  
Keyword(s):  
Large Scale ◽  
Van Der Waals ◽  
Epitaxial Graphene ◽  
Graphene Layers

Pinned and unpinned epitaxial graphene layers on SiC studied by Raman spectroscopy

2012 ◽  
Vol 111 (11) ◽  
pp. 114307 ◽  
Author(s):  
K. Grodecki ◽  
J. A. Blaszczyk ◽  
W. Strupinski ◽  
A. Wysmolek ◽  
R. Stępniewski ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Epitaxial Graphene ◽  
Graphene Layers

scholarly journals Novel Green Synthesis of Graphene Layers using Zante Currants and Graphene Oxide

2018 ◽  
Vol 34 (6) ◽  
pp. 2832-2837 ◽  
Author(s):  
Mohd Zaid Ansari ◽  
Mohammad Nadeem Lone ◽  
Shabana Sajid ◽  
Weqar Ahmad Siddiqui
Keyword(s):  
Graphene Oxide ◽  
Large Scale ◽  
Uv Spectrophotometry ◽  
Scale Production ◽  
Graphene Layers ◽  
Large Scale Production ◽  
Reduced Graphene ◽  
Reduction Effect ◽  
First Time ◽  
Facile Route

The present work shows a facile route for the preparation of graphene layers and for the first time Zante currants extract used for the effective deoxygenation of graphene oxide has been reported. Zante currants (ZC) extract reduce effectively GO into few layered structures of graphene (FLG). The morphology of few layers graphene and graphene oxide (GO) were investigated by SEM and TEM. Reduction effect on graphene oxide confirm by other technique like Raman, FTIR, XRD and UV spectrophotometry. This procedure keep away the use of hazardous chemicals, thus providing a new hope for large scale production of chemically reduced graphene.

Large-scale synthesis of van der Waals 1-dimensional material Mo6S3I6 by using a MoI2 precursor

2019 ◽  
Vol 803 ◽  
pp. 499-504
Author(s):  
Seungbae Oh ◽  
Sudong Chae ◽  
Kyung Hwan Choi ◽  
Bum Jun Kim ◽  
Sang Hoon Lee ◽  
...  
Keyword(s):  
Large Scale ◽  
Van Der Waals ◽  
Large Scale Synthesis

scholarly journals Self-selective van der Waals heterostructures for large scale memory array

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Linfeng Sun ◽  
Yishu Zhang ◽  
Gyeongtak Han ◽  
Geunwoo Hwang ◽  
Jinbao Jiang ◽  
...  
Keyword(s):  
Large Scale ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Memory Array

scholarly journals Observation of site-controlled localized charged excitons in CrI3/WSe2 heterostructures

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Arunabh Mukherjee ◽  
Kamran Shayan ◽  
Lizhong Li ◽  
Jie Shan ◽  
Kin Fai Mak ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Large Scale ◽  
Information Science ◽  
Van Der Waals ◽  
Spatial Location ◽  
Band Alignment ◽  
Tungsten Diselenide ◽  
Electrostatic Doping ◽  
Localized Excitons ◽  
Quantum Emitters

Abstract Isolated spins are the focus of intense scientific exploration due to their potential role as qubits for quantum information science. Optical access to single spins, demonstrated in III-V semiconducting quantum dots, has fueled research aimed at realizing quantum networks. More recently, quantum emitters in atomically thin materials such as tungsten diselenide have been demonstrated to host optically addressable single spins by means of electrostatic doping the localized excitons. Electrostatic doping is not the only route to charging localized quantum emitters and another path forward is through band structure engineering using van der Waals heterojunctions. Critical to this second approach is to interface tungsten diselenide with other van der Waals materials with relative band-alignments conducive to the phenomenon of charge transfer. In this work we show that the Type-II band-alignment between tungsten diselenide and chromium triiodide can be exploited to excite localized charged excitons in tungsten diselenide. Leveraging spin-dependent charge transfer in the device, we demonstrate spin selectivity in the preparation of the spin-valley state of localized single holes. Combined with the use of strain-inducing nanopillars to coordinate the spatial location of tungsten diselenide quantum emitters, we uncover the possibility of realizing large-scale deterministic arrays of optically addressable spin-valley holes in a solid state platform.

Tuning electronic transport in epitaxial graphene-based van der Waals heterostructures

Nanoscale ◽  
2016 ◽  
Vol 8 (16) ◽  
pp. 8947-8954 ◽  
Author(s):  
Yu-Chuan Lin ◽  
Jun Li ◽  
Sergio C. de la Barrera ◽  
Sarah M. Eichfeld ◽  
Yifan Nie ◽  
...  
Keyword(s):  
Electronic Transport ◽  
Van Der Waals ◽  
Epitaxial Graphene ◽  
Van Der Waals Heterostructures

Deep UV Raman Spectroscopy of Epitaxial Graphenes on Vicinal 6H-SiC Substrates

2010 ◽  
Vol 645-648 ◽  
pp. 611-614
Author(s):  
Susumu Kamoi ◽  
Noriyuki Hasuike ◽  
Kenji Kisoda ◽  
Hiroshi Harima ◽  
Kouhei Morita ◽  
...  
Keyword(s):  
Graphene Layer ◽  
Peak Frequency ◽  
Epitaxial Graphene ◽  
Intensity Increase ◽  
Band Frequency ◽  
Graphene Layers ◽  
Exfoliated Graphene ◽  
Uv Raman Spectroscopy ◽  
Uv Raman ◽  
Deep Ultraviolet

We report microscopic Raman scattering studies of epitaxial graphene grown on SiC substrates using a deep-ultraviolet (UV) laser excitation at 266 nm to elucidate the interaction between the graphene layer and the substrate. The samples were grown on the Si-face of vicinal 6H-SiC (0001) substrates by sublimation of Si from SiC. The G band of the epitaxial graphene layer was clearly observed without any data manipulation. Increasing the number of graphene layers, the peak frequency of the G-band decreases linearly, while the peak width and the intensity increase. The G-band frequency of the graphene layers on SiC is higher than those of exfoliated graphene, which has been ascribed to compression from the substrate.

scholarly journals Large area molybdenum disulphide- epitaxial graphene vertical Van der Waals heterostructures

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Debora Pierucci ◽  
Hugo Henck ◽  
Carl H. Naylor ◽  
Haikel Sediri ◽  
Emmanuel Lhuillier ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Epitaxial Graphene ◽  
Large Area ◽  
Molybdenum Disulphide ◽  
Van Der Waals Heterostructures
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