Back to Search
Start Over
Effect of Aromatic SAMs Molecules on Graphene/Silicon Schottky Diode Performance
- Source :
- ECS Journal of Solid State Science and Technology. 5:M69-M73
- Publication Year :
- 2016
- Publisher :
- The Electrochemical Society, 2016.
-
Abstract
- WOS: 000378840000029<br />Au/n-Si/Graphene/Au Schottky diodes were fabricated by transferring atmospheric pressure chemical vapor deposited (APCVD) graphene on silicon substrates. Graphene/n-Si interface properties were improved by using 5-[(3-methylphenyl)(phenyl) amino] isophthalic acid (MePIFA) and 5-(diphenyl) amino] isophthalic acid (DPIFA) aromatic self-assembled monolayer (SAM) molecules. The surface morphologies of modified and non-modified films were investigated by atomic force microscopy and scanning electron microscopy. The surface potential characteristics were obtained by Kelvin-probe force microscopy and found as 0.158 V, 0.188 V and 0,383 V as a result of SAMs modification. The ideality factors of n-Si/Graphene, n-Si/MePIFA/Graphene and n-Si/DPIFA/Graphene diodes were found as 1.07, 1.13 and 1.15, respectively. Due to the chain length of aromatic organic MePIFA and DPIFA molecules, also the barrier height phi(B) values of the devices were decreased. While the barrier height of n-Si/Graphene diode was obtained as 0.931 eV, n-Si/MePIFA/Graphene and n-Si/DPIFA/Graphene diodes have barrier height of 0.820 and 0.720 eV, respectively. (C) 2016 The Electrochemical Society. All rights reserved.<br />TUBITAK (The Scientific and Technical Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [112T946]<br />This work was supported by TUBITAK (The Scientific and Technical Research Council of Turkey) with project number 112T946. We also thank AQuReC (Applied Quantum Research Center) for Raman measurements.
- Subjects :
- Self assembled monolayers
Aromatic compounds
Silicon
Materials science
Barrier heights
Analytical chemistry
chemistry.chemical_element
Nanotechnology
02 engineering and technology
010402 general chemistry
01 natural sciences
law.invention
Isophthalic acid
chemistry.chemical_compound
law
Monolayer
Graphene oxide paper
Graphene
Schottky diode
Self-assembled monolayer
021001 nanoscience & nanotechnology
0104 chemical sciences
Electronic, Optical and Magnetic Materials
chemistry
Atmospheric pressure
0210 nano-technology
Graphene nanoribbons
Subjects
Details
- ISSN :
- 21628777 and 21628769
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- ECS Journal of Solid State Science and Technology
- Accession number :
- edsair.doi.dedup.....67b825110e07528c9bc639e4224b0987