Surface morphology and electrical property evolution of super-thin Pt film on 6H-SiC substrate during annealing

2011 ◽  
Vol 26 (3) ◽  
pp. 256-261
Author(s):  
Jingjing Yang ◽  
Wenxia Yuan ◽  
Xiaopeng Zeng
Keyword(s):  
Electrical Conductivity ◽  
Electrical Property ◽  
Surface Morphology ◽  
Thin Layer ◽  
Annealing Temperature ◽  
Composition Gradient ◽  
Mechanism Analysis ◽  
Pt Films ◽  
Low Solubility ◽  
Crystalline Graphite

We reported the surface morphology and electrical property of super-thin Pt films, ∼2 nm thick, deposited on 6H-SiC (0001) substrates and subsequently annealed from 400 to 1000 °C. The surfaces of the films were found to have a feature of islands growth, and the sizes of the islands increased with increasing annealing temperature. Free carbon, produced by selective reactions between Pt and SiC, diffused toward the top surface across the product layers due to low solubility and composition gradient of carbon throughout the reaction zone. A dramatic change of electrical conductivity of the films was observed. A mechanism analysis reveals that the origin came from the contribution of aggregation of islands on the surface and formation of Pt silicides and a thin layer of crystalline graphite.

The Effects of Nitrogen and Annealing on the Electrical Property of the Diamond-Like Carbon (DLC) Films

2006 ◽  
Vol 317-318 ◽  
pp. 589-592
Author(s):  
Bong Geun Choi ◽  
Jae Kwang Kim ◽  
Won Jae Yang ◽  
Koichi Niihara ◽  
Jong Won Yoon ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Electrical Property ◽  
Flow Rate ◽  
Annealing Temperature ◽  
Carbon Films ◽  
Structure Change ◽  
Diamond Like Carbon ◽  
Bonding Structure ◽  
Deposited Films ◽  
Si Wafer

The nitrogenated diamond-like carbon films (a-C:H:N) were deposited on Si-wafer by the rf-PECVD method with the addition of nitrogen to the mixture gas of methane and hydrogen. We were investigating the effect of the additive nitrogen gases and annealing in relationship between bonding structure and electrical properties of the deposited films. The electrical conductivity of films increased with the flow rate of nitrogen increasing up to 10 sccm. Also as annealing temperature was increased, the electrical conductivity of films increased. The structure analysis results show that an increase of the flow rate of nitrogen and annealing temperature favor the formation of sp2 bonding in the films. Therefore, we confirmed that the increase of the electrical conductivity is due to structure change by graphitization of the films.

Heterogeneous Preparation of Cellulose/Ag/Polyaniline Conductive Composite and its Electrical Property

2012 ◽  
Vol 182-183 ◽  
pp. 254-258
Author(s):  
Zhong Li Zhao ◽  
Zun Li Mo ◽  
Zhong Yu Chen
Keyword(s):  
Electrical Conductivity ◽  
Electrical Property ◽  
Conductive Network ◽  
High Electrical Conductivity ◽  
Electrically Conductive ◽  
Conductive Composite

Cellulose/Ag/polyaniline conductive composite with rather excellent electrical conductivity was heterogeneously synthesized in this paper. The UV-Vis analysis indicated that homogeneous nanoAg particles deposited on the surface of cellulose in the form of globe particles. They offered some electrons to polyaniline chains. This behavior resulted to the facts that more polyaniline embedded on cellulose and an integrated electrically conductive network formed. Consequently, the high electrical conductivity of the composite was observed. The value was 3.48 S/cm, which was higher two magnitudes than the electrical conductivity of cellulose/polyaniline composite (2.15×10-2S/cm), and even was higher than the electrical conductivity of pure polyaniline (0.142 S/cm). This paper provided a facile method for the preparation of cellulose/Ag/ polyaniline composite with favorable electrical conductivity.

Influence of Chemical Modification on the Electrical Properties of Si Nanowire Arrays

2010 ◽  
Vol 160-162 ◽  
pp. 1331-1335 ◽  
Author(s):  
Chuan Bo Li ◽  
Kristel Fobelets ◽  
S.N. Syed Jalal ◽  
Wei A. Ng ◽  
Zahid A.K. Durrani
Keyword(s):  
Electrical Conductivity ◽  
Electrical Property ◽  
Electrical Properties ◽  
Chemical Modification ◽  
Nanowire Array ◽  
Noise Measurement ◽  
Nanowire Arrays ◽  
Interface Traps ◽  
Si Nanowire ◽  
Si Nanowire Array

The influence of the chemical modification on the electrical property of Si nanowire array was studied. It is found that H-terminated Si nanowire has a better electrical conductivity while OH-passivation could increase their resistance. It is believed that the introducing of OH group on the surface nanowire increases the interface traps and it is confirmed by our 1/f noise measurement.

Preparation of InN by Means of AP-HCVD Using In Buffer Layers

2007 ◽  
Vol 1040 ◽  
Author(s):  
Hiroaki Yokoo ◽  
Naoki Wakiya ◽  
Naonori Sakamoto ◽  
Takato Nakamura ◽  
Hisao Suzuki
Keyword(s):  
Electrical Property ◽  
Surface Morphology ◽  
Buffer Layer ◽  
Atmospheric Pressure ◽  
Indium Nitride ◽  
Buffer Layers ◽  
Crystal Quality ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quality Surface

AbstractWe have grown indium nitride (InN) films using In buffer layer on an a-plane sapphire substrate under atmospheric pressure by halide CVD (AP-HCVD). Growth was carried out by two steps: deposition In buffer layer at 900 °C and subsequent growth of InN layer at 650 °C. In order to compare, we also grown InN films on an a-plane sapphire. The InN films are investigated on crystal quality, surface morphology and electrical property using high-resolution X-ray diffraction (HR-XRD), X-ray pole figure, scanning electron microscope (SEM), Hall measurement. The results show that the crystal quality, surface morphology and electrical property of InN films are improved by using In buffer layer.

scholarly journals Enhancement of Oxidation Resistance of Copper by an Organic Thin Layer and its Influence on Electrical Conductivity

2016 ◽  
Vol 73 (2) ◽  
pp. 198-206 ◽  
Author(s):  
Takuya IKEDA ◽  
Tomoki TAKATA ◽  
Juri TAKAGI ◽  
Kaoru ADACHI ◽  
Yasuhisa TSUKAHARA
Keyword(s):  
Electrical Conductivity ◽  
Thin Layer ◽  
Oxidation Resistance

scholarly journals The Gas-atmosphere Effect on the Electrical Conductivity of Ultra-thin Pt films.

Shinku ◽  
1998 ◽  
Vol 41 (3) ◽  
pp. 255-257
Author(s):  
Ayako HIOKI ◽  
Akio OKAMOTO ◽  
Kazuki NATSUKAWA ◽  
Soichi OGAWA
Keyword(s):  
Electrical Conductivity ◽  
Atmosphere Effect ◽  
Gas Atmosphere ◽  
Pt Films

Anisotropy and surface morphology of polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene thin layer irradiated with ion beam

2022 ◽  
pp. 1-10
Author(s):  
Dong Hyun Kim ◽  
Eun-Mi Kim ◽  
Gi-Seok Heo ◽  
Dong Wook Lee ◽  
Jin Young Oh ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Thin Layer ◽  
Ion Beam ◽  
Poly Ethylene
Sign in / Sign up

Export Citation Format

Share Document