Controllable Low-Temperature Chemical Vapor Deposition Growth and Morphology Dependent Field Emission Property of SnO2 Nanocone Arrays with Different Morphologies

2013 ◽  
Vol 5 (8) ◽  
pp. 3033-3041 ◽  
Author(s):  
Xiao-Bo Li ◽  
Xue-Wen Wang ◽  
Qiong Shen ◽  
Jie Zheng ◽  
Wei-Hua Liu ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Field Emission ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Emission Property ◽  
Field Emission Property ◽  
Chemical Vapor Deposition Growth ◽  
Dependent Field

scholarly journals Low-Temperature Chemical Vapor Deposition Growth of MoS2 Nanodots and Their Raman and Photoluminescence Profiles

2021 ◽  
Vol 3 ◽  
Author(s):  
Larionette P. L. Mawlong ◽  
Ravi K. Biroju ◽  
P. K. Giri
Keyword(s):  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Substrate Temperature ◽  
Vapor Deposition ◽  
Photoelectron Spectroscopy ◽  
Flexible Substrate ◽  
Chemical Vapor ◽  
Structural Defects ◽  
Chemical Vapor Deposition Growth ◽  
Raman Modes

We report on the growth of an ordered array of MoS2 nanodots (lateral sizes in the range of ∼100–250 nm) by a thermal chemical vapor deposition (CVD) method directly onto SiO2 substrates at a relatively low substrate temperature (510–560°C). The temperature-dependent growth and evolution of MoS2 nanodots and the local environment of sulfur-induced structural defects and impurities were systematically investigated by field emission scanning electron microscopy, micro-Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) techniques. At the substrate temperature of 560°C, we observed mostly few-layer MoS2, and at 510°C, multilayer MoS2 growth, as confirmed from the Raman line shape analysis. With reduced substrate temperature, the density of MoS2 nanodots decreases, and layer thickness increases. Raman studies show characteristic Raman modes of the crystalline MoS2 layer, along with two new Raman modes centered at ∼346 and ∼361 cm−1, which are associated with MoO2 and MoO3 phases, respectively. Room temperature photoluminescence (PL) studies revealed strong visible PL from MoS2 layers, which is strongly blue-shifted from the bulk MoS2 flakes. The strong visible emission centered at ∼ 658 nm signifies a free excitonic transition in the direct gap of single-layer MoS2. Position-dependent PL profiles show excellent uniformity of the MoS2 layers for samples grown at 540 and 560°C. These results are significant for the low-temperature CVD growth of a few-layer MoS2 dots with direct bandgap photoluminescence on a flexible substrate.

scholarly journals Low temperature growth of carbon nanotubes by chemical vapor deposition for field emission cathodes

2007 ◽  
Vol 56 (11) ◽  
pp. 6705
Author(s):  
Guo Ping-Sheng ◽  
Chen Ting ◽  
Cao Zhang-Yi ◽  
Zhang Zhe-Juan ◽  
Chen Yi-Wei ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Field Emission ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Temperature Growth ◽  
Low Temperature Growth ◽  
Field Emission Cathodes

Low-Temperature Chemical Vapor Deposition Growth of Graphene from Toluene on Electropolished Copper Foils

ACS Nano ◽  
2012 ◽  
Vol 6 (3) ◽  
pp. 2471-2476 ◽  
Author(s):  
Bin Zhang ◽  
Wi Hyoung Lee ◽  
Richard Piner ◽  
Iskandar Kholmanov ◽  
Yaping Wu ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Growth ◽  
Copper Foils
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