Synthesis of Large-Area Monolayer and Few-Layer MoSe2 Continuous Films by Chemical Vapor Deposition without Hydrogen assisted and Formation Mechanism

Nanoscale ◽  
2021 ◽  
Author(s):  
Hui Yan ◽  
Tong Yu ◽  
Heng Li ◽  
Zhuocheng Li ◽  
Haitao Tang ◽  
...  

Two dimensional (2D) MoSe2 with layered structure has attracted extensive research due to its excellent electronic and optical properties. Controlled synthesis of large-scale and high-quality MoSe2 is highly desirable but...

2015 ◽  
Vol 6 (12) ◽  
pp. 6705-6716 ◽  
Author(s):  
Jingxue Yu ◽  
Jie Li ◽  
Wenfeng Zhang ◽  
Haixin Chang

The synthesis of high quality two-dimensional materials such as graphene, BN, and transition metal dichalcogenides by CVD provides a new opportunity for large scale applications.


2010 ◽  
Vol 133 (3) ◽  
Author(s):  
Myung Gwan Hahm ◽  
Young-Kyun Kwon ◽  
Ahmed Busnaina ◽  
Yung Joon Jung

Due to their unique one-dimensional nanostructure along with excellent mechanical, electrical, and optical properties, carbon nanotubes (CNTs) become a promising material for diverse nanotechnology applications. However, large-scale and structure controlled synthesis of CNTs still have many difficulties due to the lack of understanding of the fundamental growth mechanism of CNTs, as well as the difficulty of controlling atomic-scale physical and chemical reactions during the nanotube growth process. Especially, controlling the number of graphene wall, diameter, and chirality of CNTs are the most important issues that need to be solved to harness the full potential of CNTs. Here we report the large-scale selective synthesis of vertically aligned single walled carbon nanotubes (SWNTs) and double walled carbon nanotubes (DWNTs) by controlling the size of catalyst nanoparticles in the highly effective oxygen assisted thermal chemical vapor deposition (CVD) process. We also demonstrate a simple but powerful strategy for synthesizing ultrahigh density and diameter selected vertically aligned SWNTs through the precise control of carbon flow during a thermal CVD process.


2011 ◽  
Vol 1348 ◽  
Author(s):  
Jian Lin ◽  
Miroslav Penchev ◽  
Guoping Wang ◽  
Rajat K Paul ◽  
Jiebin Zhong ◽  
...  

ABSTRACTIn this work, we report the synthesis and characterization of three dimensional heterostructures graphene nanostructures (HGN) comprising continuous large area graphene layers and ZnO nanostructures, fabricated via chemical vapor deposition. Characterization of large area HGN demonstrates that it consists of 1-5 layers of graphene, and exhibits high optical transmittance and enhanced electrical conductivity. Electron microscopy investigation of the three dimensional heterostructures shows that the morphology of ZnO nanostructures is highly dependent on the growth temperature. It is observed that ordered crystalline ZnO nanostructures are preferably grown along the <0001> direction. Ultraviolet spectroscopy indicates that the CVD grown HGN layers has excellent optical properties. A combination of electrical and optical properties of graphene and ZnO building blocks in ZnO based HGN provides unique characteristics for opportunities in future optoelectronic devices.


1999 ◽  
Vol 27 (5) ◽  
pp. 1317-1328 ◽  
Author(s):  
J.L. Giuliani ◽  
V.A. Shamamian ◽  
R.E. Thomas ◽  
J.P. Apruzese ◽  
M. Mulbrandon ◽  
...  

2013 ◽  
Vol 2 (2) ◽  
pp. 131-136 ◽  
Author(s):  
Chunxiao Cong ◽  
Jingzhi Shang ◽  
Xing Wu ◽  
Bingchen Cao ◽  
Namphung Peimyoo ◽  
...  

2017 ◽  
Vol 28 (46) ◽  
pp. 465103 ◽  
Author(s):  
Jeong-Gyu Song ◽  
Gyeong Hee Ryu ◽  
Youngjun Kim ◽  
Whang Je Woo ◽  
Kyung Yong Ko ◽  
...  

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