scholarly journals Ohmic Conacts to p-GaN on the Basis of Carbon Nanomaterials

2015 ◽  
Vol 65 (6) ◽  
pp. 386-389 ◽  
Author(s):  
Liday Jozef ◽  
Vogrinčič Peter ◽  
Vretenár Viliam ◽  
Kotlár Mário ◽  
Marton Marián ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Electrical Properties ◽  
Reduced Graphene Oxide ◽  
Ohmic Contacts ◽  
Carbon Nanomaterials ◽  
Annealing Temperature ◽  
Metallization Layer ◽  
Reduced Graphene ◽  
Planar Electrodes

Abstract We have designed and verified a new structure for ohmic contacts to p-GaN based on a layer of carbon nanotubes (CNT), reduced graphene oxide (r-GO) and metallic layers of Cr, Pd and Au, namely in configurations Au/Cr/r-GO/CNT/p-GaN and Au/Pd/r-GO/CNT/p-GaN. The effects have been studied of the annealing temperature and the gas ambient upon the electrical properties of the contacts. Annealing of the Au/Pd/r-GO/CNT/p-GaN structure in air at 500°C for 1 minute resulted in linear I - V curves measured between planar electrodes on the p-GaN. Hence, addition of r-GO to the CNT interlayer between p-GaN and the metallization layer is a highly promising procedure for further improvements of the ohmic contacts to p-GaN.

scholarly journals Application Of Carbon Nanotubes And Reduced Graphene Oxide Layers For Ohmic Contacts To p–GaN

2015 ◽  
Vol 66 (6) ◽  
pp. 344-347
Author(s):  
Jozef Liday ◽  
Peter Vogrinčič ◽  
Viliam Vretenár ◽  
Mário Kotlár ◽  
Marián Marton ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Contact Resistance ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Ohmic Contact ◽  
Ohmic Contacts ◽  
Spray Coating ◽  
Reduced Graphene

AbstractDue to their properties, carbon nanotubes and reduced graphene oxide are highly promising materials for obtaining low-resistance ohmic contacts to p-GaN with good optical transparency for visible light. In this contribution we designed a combination of these two materials, along with a cap layer, to be used as structures for ohmic contacts to p-GaN. Carbon nanotube (CNT) and graphene oxide (GO) layers were deposited by spray coating using an off-the-shelf airbrush on p-GaN layers. The metallic layers of Au/Pd were vapour deposited. The structures for ohmic contacts were prepared in two configurations, namely as Au/Pd/r-GO/CNT/p-GaN and Au/Pd/CNT/r-GO/CNT/p-GaN. The prepared structures provide a low resistivity ohmic contact after subsequent annealing in air ambient at 600 °C for 3 minutes. The contact containing the sandwich CNT/r-GO/CNT interstructure exhibits lower values of contact resistance in comparison with the r-GO/CNT interstructure.

Controllable Fabrication of Flexible Multi-Walled Carbon Nanotubes/Reduced Graphene Oxide Hybrid Ultrathin Films

2015 ◽  
Vol 748 ◽  
pp. 175-178
Author(s):  
Wen Xiu Yu ◽  
Su Jie Qin ◽  
Zuo Ping Xiong ◽  
Zhong Qiang Ren ◽  
Xue Wen Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
Layer By Layer ◽  
Hybrid Films ◽  
Reduced Graphene ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Multi-walled carbon nanotubes/reduced graphene oxide (MWCNT/rGO) hybrid films have attracted increasing massive attention due to their unique advantages such as high conductivity, superior mechanical property and thermal properties. In this work, a novel, facile and low cost method was developed to fabricate the MWCNT/rGO flexible ultrathin hybrid films with the thickness of about 55 nm. These hybrid films can be fabricated repeatedly through layer-by-layer exfoliation on the surface of liquids, and transferred to various substrates. The devices based on MWCNT/rGO hybrid films offer a unique platform for integrating carbon nanomaterials for advanced electronics, energy, and sensor applications.

Elastomer based nanocomposites with reduced graphene oxide nanofillers allow for enhanced tensile and electrical properties

2020 ◽  
Vol 27 (5) ◽  
Author(s):  
Sumaira Mazhar ◽  
Bret P. Lawson ◽  
Barry D. Stein ◽  
Maren Pink ◽  
John Carini ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrical Properties ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

High-field emission performance of a NiFe2O4/rGO/CNT tertiary nanocomposite

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26745-26751 ◽  
Author(s):  
K. Hareesh ◽  
Sachin R. Suryawanshi ◽  
B. Shateesh ◽  
Deodatta M. Phase ◽  
Shailendra S. Dahiwale ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Field Emission ◽  
High Field ◽  
Emission Performance ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Reduced Graphene ◽  
Field Emission Performance

Herein, we report the field emission properties of NiFe2O4/reduced graphene oxide/carbon nanotubes (NGC) and compared them with the field emission properties of NiFe2O4/carbon nanotubes (NC) and NiFe2O4/reduced graphene oxide (NG).

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