scholarly journals Large Area Synthesis of Graphene Sheets by Metal-Catalyzed Crystallization

2011 ◽  
ACS Omega ◽  
2019 ◽  
Vol 4 (5) ◽  
pp. 8758-8766 ◽  
Author(s):  
Harsh A. Chaliyawala ◽  
Narasimman Rajaram ◽  
Roma Patel ◽  
Abhijit Ray ◽  
Indrajit Mukhopadhyay

2013 ◽  
Vol 117 (39) ◽  
pp. 9454-9461 ◽  
Author(s):  
Chun-Da Liao ◽  
Yi-Ying Lu ◽  
Srinivasa Reddy Tamalampudi ◽  
Hung-Chieh Cheng ◽  
Yit-Tsong Chen

2018 ◽  
Vol 6 (45) ◽  
pp. 22437-22464 ◽  
Author(s):  
Afzal Khan ◽  
Mohammad Rezwan Habib ◽  
Rishi Ranjan Kumar ◽  
Sk Masiul Islam ◽  
V. Arivazhagan ◽  
...  

Metal-catalyzed chemical vapor deposition (CVD) growth of graphene is one of the most important techniques to produce high quality and large area graphene films.


NANO ◽  
2009 ◽  
Vol 04 (02) ◽  
pp. 83-90 ◽  
Author(s):  
FETHULLAH GÜNEŞ ◽  
GANG HEE HAN ◽  
KI KANG KIM ◽  
EUN SUNG KIM ◽  
SEUNG JIN CHAE ◽  
...  

A simple approach by direct synthesis of few-layer graphene sheets and transferring them onto flexible substrate is demonstrated. The hydrogen effect on the D band intensity of Raman spectra for few-layer graphene sheets synthesized by chemical vapor deposition (CVD) on Ni -evaporated silicon substrate is investigated by optimizing the mixing ratio of C 2 H 4/ H 2. While the Ni etchant is used to melt away the squeezed Ni layers between graphene sheet and silicon substrate, the graphene sheet is transferred onto polyethylene terephthalate film by a fishing method. It is found that the condition of graphene transfer strongly relies on the cooling rate of the film during CVD synthesis. The sheet resistance of the film decreases as the film thickness increases. A sheet resistance of 233 Ω/sq is obtained at a transmittance of 62%.


2020 ◽  
Vol 112 ◽  
pp. 107729 ◽  
Author(s):  
Chenglong Yu ◽  
Wenzhuo Shen ◽  
Jiawei Yan ◽  
Min Zhong ◽  
Jiali Zhang ◽  
...  

2011 ◽  
Vol 306-307 ◽  
pp. 1435-1439
Author(s):  
S.R. Dhakate ◽  
N. Chauhan ◽  
S. Sharma ◽  
R.B. Mathur

We report an easy and scaleable approach to produce single and double layer graphene (Gr)-sheet from re-exfoliation of expanded graphite (EG) with large area. Transmission and scanning electron microscopic observations show that the Gr-sheets have an area of ~ (12 x 10) μm2. Raman spectroscopy has confirmed the presence of single and double layer Gr-sheet with I2D/IG ratio as ~ 1.7. Scanning probe microscopy studies reveals that on re-exfoliation of EG, thickness of Gr-layer decreases from 6-7 nm to 0.8-1.1 nm. This infers that re-exfoliation overcomes the problem of insufficient oxidation or inadequate pressure buildup during heat treatment.


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