scholarly journals Catalyst-free one step synthesis of large area vertically stacked N-doped graphene-boron nitride heterostructures from biomass source

Nanoscale ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 4391-4397 ◽  
Author(s):  
Ivan Esteve-Adell ◽  
Jinbao He ◽  
Fernando Ramiro ◽  
Pedro Atienzar ◽  
Ana Primo ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Inert Atmosphere ◽  
Large Area ◽  
Catalyst Free ◽  
Doped Graphene ◽  
One Step ◽  
The One

A procedure for the one-step preparation of films of few-layer N-doped graphene on top of nanometric hexagonal boron nitride sheets based on the pyrolysis at 900 °C under an inert atmosphere is reported.

scholarly journals The Photodetectors Based on Lateral Monolayer MoS2/WS2 Heterojunctions

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Caihong Li ◽  
Juntong Zhu ◽  
Wen Du ◽  
Yixuan Huang ◽  
Hao Xu ◽  
...  
Keyword(s):  
Communication Systems ◽  
Transition Metal Dichalcogenides ◽  
Chemical Vapor ◽  
Large Area ◽  
Optical Signals ◽  
Metal Dichalcogenides ◽  
One Step ◽  
The One ◽  
Charge Carrier Trapping ◽  
Sharp Interfaces

AbstractMonolayer transition metal dichalcogenides (TMDs) show promising potential for next-generation optoelectronics due to excellent light capturing and photodetection capabilities. Photodetectors, as important components of sensing, imaging and communication systems, are able to perceive and convert optical signals to electrical signals. Herein, the large-area and high-quality lateral monolayer MoS2/WS2 heterojunctions were synthesized via the one-step liquid-phase chemical vapor deposition approach. Systematic characterization measurements have verified good uniformity and sharp interfaces of the channel materials. As a result, the photodetectors enhanced by the photogating effect can deliver competitive performance, including responsivity of ~ 567.6 A/W and detectivity of ~ 7.17 × 1011 Jones. In addition, the 1/f noise obtained from the current power spectrum is not conductive to the development of photodetectors, which is considered as originating from charge carrier trapping/detrapping. Therefore, this work may contribute to efficient optoelectronic devices based on lateral monolayer TMD heterostructures.

Controlled Growth of Large-Area Uniform Multilayer Hexagonal Boron Nitride as an Effective 2D Substrate

ACS Nano ◽  
2018 ◽  
Vol 12 (6) ◽  
pp. 6236-6244 ◽  
Author(s):  
Yuki Uchida ◽  
Sho Nakandakari ◽  
Kenji Kawahara ◽  
Shigeto Yamasaki ◽  
Masatoshi Mitsuhara ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Controlled Growth ◽  
Large Area

Catalyst-free growth of two-dimensional hexagonal boron nitride few-layers on sapphire for deep ultraviolet photodetectors

2019 ◽  
Vol 7 (47) ◽  
pp. 14999-15006 ◽  
Author(s):  
Menglei Gao ◽  
Junhua Meng ◽  
Yanan Chen ◽  
Siyuan Ye ◽  
Ye Wang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Two Dimensional ◽  
Wafer Scale ◽  
Sapphire Substrates ◽  
Catalyst Free ◽  
Deep Ultraviolet ◽  
Free Growth ◽  
Ultraviolet Photodetectors

Catalyst-free growth of wafer-scale h-BN few-layers is realized on sapphire substrates by the combination of surface nitridation and N+ sputtering.

Cotton pad-derived large-area 3D N-doped graphene-like full carbon cathode with an O-rich functional group for flexible all solid Zn–air batteries

2020 ◽  
Vol 8 (22) ◽  
pp. 11202-11209 ◽  
Author(s):  
Xiangjun Zheng ◽  
Xuecheng Cao ◽  
Kai Zeng ◽  
Zhihui Sun ◽  
Jin Yan ◽  
...  
Keyword(s):  
Solid State ◽  
Functional Group ◽  
Pyrolysis Process ◽  
Large Area ◽  
Air Cathode ◽  
Carbon Cathode ◽  
Doped Graphene ◽  
One Step

A flexible 3D N, O-doped graphene-like full carbon cathode has been synthesized with a cotton pad as a template via a scalable and one-step pyrolysis process, and can be directly used as an efficient air cathode for flexible all solid-state ZABs.

Ultraclean and large-area monolayer hexagonal boron nitride on Cu foil using chemical vapor deposition

2015 ◽  
Vol 26 (27) ◽  
pp. 275601 ◽  
Author(s):  
Yao Wen ◽  
Xunzhong Shang ◽  
Ji Dong ◽  
Kai Xu ◽  
Jun He ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Boron Nitride ◽  
Vapor Deposition ◽  
Hexagonal Boron Nitride ◽  
Chemical Vapor ◽  
Large Area ◽  
Cu Foil

Electron microscopic characterization of multi-layer boron nitride nanosheets

2013 ◽  
Vol 1549 ◽  
pp. 85-90
Author(s):  
Muhammad Sajjad ◽  
Peter Feng
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Direct Synthesis ◽  
Laser Pulses ◽  
Synthesis Process ◽  
Large Area ◽  
Electron Microscopic ◽  
Boron Nitride Nanosheets ◽  
Selected Area Electron Diffraction ◽  
High Resolution Tem

AbstractWe report on the direct synthesis of multi-layer boron nitride nanosheets (BNNSs) and their electron microscopic characterization. The synthesis process is carried out by irradiating hexagonal boron nitride (h-BN) target using short laser pulses. Scanning electron microscopy showed large area (≈50×50 μm2) flat layers of BNNSs transparent to the electron beam. Low magnification transmission electron microscope (TEM) is used to characterize different areas of nanosheets. TEM revealed that each individual nanosheet is composed of several layers. High resolution TEM (HRTEM) measurements confirmed the layered structure. HRTEM analysis of the edge of a nanosheet showed 10 layers from which we obtained the thickness (3.3nm) of an individual nanosheet. Selected area electron diffraction pattern indicated polycrystalline structure of nanosheets. Raman spectroscopy clearly identified E2g vibrational mode related to h-BN.

scholarly journals Large-Scale Synthesis of High-Quality Hexagonal Boron Nitride Nanosheets for Large-Area Graphene Electronics

Nano Letters ◽  
2012 ◽  
Vol 12 (2) ◽  
pp. 714-718 ◽  
Author(s):  
Kang Hyuck Lee ◽  
Hyeon-Jin Shin ◽  
Jinyeong Lee ◽  
In-yeal Lee ◽  
Gil-Ho Kim ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Large Area ◽  
High Quality ◽  
Boron Nitride Nanosheets ◽  
Large Scale Synthesis

scholarly journals Electrical Homogeneity of Large-Area Chemical Vapor Deposited Multilayer Hexagonal Boron Nitride Sheets

2017 ◽  
Vol 9 (46) ◽  
pp. 39895-39900 ◽  
Author(s):  
Fei Hui ◽  
Wenjing Fang ◽  
Wei Sun Leong ◽  
Tewa Kpulun ◽  
Haozhe Wang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Chemical Vapor ◽  
Large Area ◽  
Chemical Vapor Deposited
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