Topic
Contact resistance
About: Contact resistance is a research topic. Over the lifetime, 15262 publications have been published within this topic receiving 232144 citations. The topic is also known as: electrical contact resistance & ECR.
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TL;DR: In this paper, the authors synthesize monolayer Molybdenum disulfide (MoS2) on Si/SiO2 substrate via chemical vapor deposition (CVD) method and comprehensively study the device performance based on dual-gated MoS2 field effect transistors.
Abstract: Monolayer Molybdenum Disulfide (MoS2) with a direct band gap of 1.8 eV is a promising two-dimensional material with a potential to surpass graphene in next generation nanoelectronic applications. In this letter, we synthesize monolayer MoS2 on Si/SiO2 substrate via chemical vapor deposition (CVD) method and comprehensively study the device performance based on dual-gated MoS2 field-effect transistors. Over 100 devices are studied to obtain a statistical description of device performance in CVD MoS2. We examine and scale down the channel length of the transistors to 100 nm and achieve record high drain current of 62.5 mA/mm in CVD monolayer MoS2 film ever reported. We further extract the intrinsic contact resistance of low work function metal Ti on monolayer CVD MoS2 with an expectation value of 175 {\Omega}.mm, which can be significantly decreased to 10 {\Omega}.mm by appropriate gating. Finally, field-effect mobilities ({\mu}FE) of the carriers at various channel lengths are obtained. By taking the impact of contact resistance into account, an average and maximum intrinsic {\mu}FE is estimated to be 13.0 and 21.6 cm2/Vs in monolayer CVD MoS2 films, respectively.
159 citations
TL;DR: In this article, a hydrogen-doped indium oxide (IO:H) and indium tin oxide (ITO) bilayer was proposed for silicon heterojunction solar cells.
159 citations
TL;DR: The result suggests the utility of graphene-based materials as electrodes in devices with unusual, nonplanar 3D architectures and demonstrates that graphene exhibits excellent optical transparency even after deposition of the thin metal films.
Abstract: We report a type of device that combines vertical arrays of one-dimensional (1D) pillar-superlattice (PSL) structures with 2D graphene sheets to yield a class of light emitting diode (LED) with interesting mechanical, optical, and electrical characteristics. In this application, graphene sheets coated with very thin metal layers exhibit good mechanical and electrical properties and an ability to mount, in a freely suspended configuration, on the PSL arrays as a top window electrode. Optical characterization demonstrates that graphene exhibits excellent optical transparency even after deposition of the thin metal films. Thermal annealing of the graphene/metal (Gr/M) contact to the GaAs decreases the contact resistance, to provide enhanced carrier injection. The resulting PSL-Gr/M LEDs exhibit bright light emission over large areas. The result suggests the utility of graphene-based materials as electrodes in devices with unusual, nonplanar 3D architectures.
158 citations
TL;DR: In this article, the experimental measurements of contact thermal resistance between individual carbon nanotubes were performed and it was shown that the contact thermal conductance can increase by nearly two orders of magnitude (from 10−8 to 10−6 W/K) as the contact area increases from a cross contact to an aligned contact.
Abstract: We report on experimental measurements of contact thermal resistance between individual carbon nanotubes. Results indicate that the contact thermal conductance can increase by nearly two orders of magnitude (from 10−8 to 10−6 W/K) as the contact area increases from a cross contact to an aligned contact. Normalization with respect to the contact area leads to normalized contact thermal resistance on the order of 10−9 m2 K/W at room temperature, one order of magnitude lower than that from a molecular dynamics simulation in literature. These results should have important implications in the design of carbon nanotube-polymer composites for tunable thermal properties.
158 citations
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TL;DR: Low surface energy, hydrophobic coatings applied to oxide surfaces are promising for minimizing adhesion and static-charge accumulation as mentioned in this paper, but they are not suitable for contact resistance and adhesion.
Abstract: be implemented to guarantee that freestanding films exhibit low curvature, and sufficient design tolerance must be built into the device to avoid contact and adhesion due to handling after release of the freestanding structures. Contacts are often inherent to the function of a device. Optical switching devices require rapid contact and disengagement, creating a dynamic adhesive interface. Microrelays have conflicting demands of low contact resistance and low adhesion. In some applications, switches may remain in contact for extended periods. In all of these, long-term changes in adhesive energy due to the stability of the interface and environmental factors are of great concern. Low-surface-energy, hydrophobic coatings applied to oxide surfaces are promising for minimizing adhesion and static-charge accumulation. Typically, these are very thin
157 citations