Study on the measurement accuracy of circular transmission line model for low-resistance Ohmic contacts on III-V wide band-gap semiconductors

Liu, Tong; Huang, Rong; Li, Fangsen; Huang, Zhiwen; Zhang, Jian; Liu, Jianping; Zhang, Liqun; Zhang, Shuming; Dingsun, An; Yang, Hui

doi:10.1016/j.cap.2018.03.012

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…It would require too many specimens with the full factorial design, so the orthogonal experimental design will be adopted for the compressive strength experimental study to reduce the required experimental specimens [25]. For the electrical characteristic experiment study, the four-electrode method will be adopted, which has been proved that it can provide more accurate measured results [26] than those with other measured methods.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Electrical Characteristics of Graphite Tailing Concrete

Liu

Zhu

et al. 2018

Advances in Materials Science and Engineering

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The graphite tailing causes serious environmental pollution, and the pollution problem becomes worse and worse with the increase in graphite demands. This paper focuses on the graphite tailing concrete, which can alleviate the environment problem through utilizing graphite tailings. With the orthogonal experimental design, 16 groups of specimens were designed to investigate the compressive strength of the graphite tailing concrete, and each group had 6 specimens. The significance sequence of the influencing factors for the compressive strength was studied, including the ratio of water to cement, sand ratio, graphite tailings content, and carbon fiber content. The optimal contents of graphite tailings and carbon fiber were obtained from the further experimental study on the electrical characteristics of the graphite tailing concrete, and a regression analysis was conducted to develop the predictive mixture design relationships for the electrical resistivity of the conductive graphite tailing concrete. The experimental results show that the conductive concrete mixture containing graphite tailings and carbon fiber has satisfactory mechanical strength along with well electrical conductivity. With the increase in graphite tailings content, the compressive strength decreases slowly, but the electrical resistivity decreases much more obviously. Predictions with the proposed relationship are in reasonable agreement with experimental results. This study provides references for the graphite tailing utilization alleviating the environment problems.

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Section: Introductionmentioning

confidence: 99%

Mechanical and Electrical Characteristics of Graphite Tailing Concrete

Liu

Zhu

et al. 2018

Advances in Materials Science and Engineering

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“…The ρ C is measured to be (2.8 ± 0.2) × 10 −5 cm 2 for the HT sample, much lower than that of the RT-sample, which is (6.4 ± 0.5) × 10 −3 cm 2 . 21 The I-V behavior is improved by elevating the chamber temperature. It is speculated that the lowering of the ρ C may come from a more intimate contact between Pd and p-GaN due to the desorption of carbon or oxide contaminations at Pd/p-GaN interface in an ultra-high vacuum environment at elevated temperature, leading to the increase of Pd-Ga solid solutions and the concentration of Ga vacancies.…”

Section: Resultsmentioning

confidence: 99%

“…A diffusion barrier layer is essential to minimize the inter-diffusion of the metal layers. Among various metals reported previously, 6,9,[18][19][20][21] Pt is commonly used as the barrier layer due to the high melting point, high electrical conductivity, high thermal and chemical stability. 22,23 However, some amount of the Au and Pd atoms still inter-diffuse through the grain boundaries and defects.…”

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confidence: 99%

Investigation of Electrical and Interfacial Properties of Improved Ohmic Contact on p-Type GaN

Liu

Huang

et al. 2019

ECS J. Solid State Sci. Technol.

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Ohmic contacts on p-GaN with Pd/Pt/Au metallization scheme deposited at room temperature and elevated temperature were prepared to study the effect of metal deposition temperature on the contact properties. The specific contact resistance decreased by the heat-treatment of the p-GaN sample in an ultra-high vacuum environment. The in-diffusion of Au atoms and out-diffusion of Pd atoms are further suppressed by the diffusion barrier layer deposited at elevated temperature. The interfacial microstructure shows that the formation of Pd gallides is enhanced. The improvement of the electrical properties is attributed to the reduction of effective Schottky barrier height at the Pd/p-GaN interface by the XPS analyze and calculation, due to the desorption of the surface carbon or oxide contaminations of p-GaN.

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Interface analysis of TiN/n-GaN Ohmic contacts with high thermal stability

Zhu

Huang

et al. 2019

Applied Surface Science

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Study on the measurement accuracy of circular transmission line model for low-resistance Ohmic contacts on III-V wide band-gap semiconductors

Cited by 4 publications

References 19 publications

Mechanical and Electrical Characteristics of Graphite Tailing Concrete

Mechanical and Electrical Characteristics of Graphite Tailing Concrete

Investigation of Electrical and Interfacial Properties of Improved Ohmic Contact on p-Type GaN

Interface analysis of TiN/n-GaN Ohmic contacts with high thermal stability

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