Comparison of the mechanism of low defect few-layer graphene fabricated on different metals by pulsed laser deposition

2012 ◽  
Vol 25 ◽  
pp. 98-102 ◽  
Author(s):  
Angel T.T. Koh ◽  
Yuan Mei Foong ◽  
Daniel H.C. Chua
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Layer Graphene ◽  
Few Layer Graphene

scholarly journals Bi- tri- and few-layer graphene growth by PLD technique using Ni as catalyst

2018 ◽  
Vol 35 (4) ◽  
pp. 687-693 ◽  
Author(s):  
Umber Kalsoom ◽  
M. Shahid Rafique ◽  
Shamaila Shahzadi ◽  
Khizra Fatima ◽  
Rabia ShaheeN
Keyword(s):  
Pulsed Laser Deposition ◽  
Profile Analysis ◽  
Research Work ◽  
Pulsed Laser ◽  
Growth Conditions ◽  
Laser Deposition ◽  
Line Profile Analysis ◽  
Layer Graphene ◽  
Afm Micrographs ◽  
Few Layer Graphene

Abstract The objective of the present research work is to optimize the growth conditions of bi- tri- and few-layer graphene using pulsed laser deposition (PLD) technique. The graphene was grown on n-type silicon (1 0 0) at 530 °C. Raman spectroscopy of the grown films revealed that the growth of low defect tri-layer graphene depended upon Ni content and uniformity of the Ni film. The line profile analysis of the AFM micrographs of the films also confirmed the formation of bi- tri- and a few-layer graphene. The deposited uniform Ni film matrix and carbon/Ni thickness ratio are the controlling factors for the growth of bitri- or few- layer graphene using pulsed laser deposition technique.

scholarly journals Ni induced few-layer graphene growth at low temperature by pulsed laser deposition

AIP Advances ◽  
2011 ◽  
Vol 1 (2) ◽  
pp. 022141 ◽  
Author(s):  
K. Wang ◽  
G. Tai ◽  
K. H. Wong ◽  
S. P. Lau ◽  
W. Guo
Keyword(s):  
Low Temperature ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Graphene Growth ◽  
Layer Graphene ◽  
Few Layer Graphene

scholarly journals Tailoring the Grain Size of Bi-Layer Graphene by Pulsed Laser Deposition

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 885 ◽  
Author(s):  
Jin Wang ◽  
Xuemin Wang ◽  
Jian Yu ◽  
Tingting Xiao ◽  
Liping Peng ◽  
...  
Keyword(s):  
Grain Size ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Photoelectron Spectra ◽  
Laser Deposition ◽  
Stable Region ◽  
Thermoelectric Efficiency ◽  
Sem Images ◽  
Hybrid State ◽  
Layer Graphene

Improving the thermoelectric efficiency of a material requires a suitable ratio between electrical and thermal conductivity. Nanostructured graphene provides a possible route to improving thermoelectric efficiency. Bi-layer graphene was successfully prepared using pulsed laser deposition in this study. The size of graphene grains was controlled by adjusting the number of pulses. Raman spectra indicated that the graphene was bi-layer. Scanning electron microscopy (SEM) images clearly show that graphene changes from nanostructured to continuous films when more pulses are used during fabrication. Those results indicate that the size of the grains can be controlled between 39 and 182 nm. A detailed analysis of X-ray photoelectron spectra reveals that the sp2 hybrid state is the main chemical state in carbon. The mobility is significantly affected by the grain size in graphene, and there exists a relatively stable region between 500 and 800 pulses. The observed phenomena originate from competition between decreasing resistance and increasing carrier concentration. These studies should be valuable for regulating grains sizes for thermoelectric applications of graphene.

Microanalysis of silicate glass films grown on α-Al2O3 by pulsed-laser deposition

1993 ◽  
Vol 51 ◽  
pp. 438-439
Author(s):  
Michael P. Mallamaci ◽  
James Bentley ◽  
C. Barry Carter
Keyword(s):  
Liquid Phase ◽  
Single Crystal ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Ceramic Materials ◽  
Laser Deposition ◽  
Triple Junctions ◽  
Ion Milling ◽  
Multicomponent Oxides ◽  
Glass Films

Glass-oxide interfaces play important roles in developing the properties of liquid-phase sintered ceramics and glass-ceramic materials. Deposition of glasses in thin-film form on oxide substrates is a potential way to determine the properties of such interfaces directly. Pulsed-laser deposition (PLD) has been successful in growing stoichiometric thin films of multicomponent oxides. Since traditional glasses are multicomponent oxides, there is the potential for PLD to provide a unique method for growing amorphous coatings on ceramics with precise control of the glass composition. Deposition of an anorthite-based (CaAl2Si2O8) glass on single-crystal α-Al2O3 was chosen as a model system to explore the feasibility of PLD for growing glass layers, since anorthite-based glass films are commonly found in the grain boundaries and triple junctions of liquid-phase sintered α-Al2O3 ceramics.Single-crystal (0001) α-Al2O3 substrates in pre-thinned form were used for film depositions. Prethinned substrates were prepared by polishing the side intended for deposition, then dimpling and polishing the opposite side, and finally ion-milling to perforation.

Pulsed laser deposition of relaxor ferroelectric films

1998 ◽  
Vol 08 (PR9) ◽  
pp. Pr9-261-Pr9-264
Author(s):  
M. Tyunina ◽  
J. Levoska ◽  
A. Sternberg ◽  
V. Zauls ◽  
M. Kundzinsh ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Relaxor Ferroelectric ◽  
Laser Deposition ◽  
Ferroelectric Films

Pulsed laser deposition of PbMg1/3Nb2/3O3 thin films and PbMg1/3Nb2/3O3/PbTiO3 multilayers

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-65-Pr11-69
Author(s):  
N. Lemée ◽  
H. Bouyanfif ◽  
J. L. Dellis ◽  
M. El Marssi ◽  
M. G. Karkut ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition

SrBi2Nb2O9 ferroelectric thin films deposited by pulsed laser deposition on textured and epitaxied platinum electrodes

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-133-Pr11-137
Author(s):  
J. R. Duclère ◽  
M. Guilloux-Viry ◽  
A. Perrin ◽  
A. Dauscher ◽  
S. Weber ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Ferroelectric Thin Films ◽  
Laser Deposition ◽  
Platinum Electrodes
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