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Technology options for reducing contact resistances in advanced transistors will be discussed. With scaling down of the size of metal-oxide-semiconductor field-effect transistors (MOSFETs) and with channel strain engineering to increase carrier mobility or reduce channel resistance, the external series resistance Rext has become a more significant component of the total resistance between the source...
Electrical performances of ultra-short channel MOSFETs were investigated on SOI substrates. The channel length was scaled to 3 nm using the anisotropic wet etching technique. A difficulty of junction technology was solved by fabrication of Junctionless-FET, which consists of uniform high concentration dopants through the body of device. Superior Junctionless-FET performance was confirmed when the...
Improvement in the resistive switching characteristics using TiN bottom electrode on TaOx/W structure as compared to W electrode is reported. The thickness of TaOx layer is confirmed by high-resolution TEM image. The memory device with TiN electrode has shown formation-free repeatable bipolar resistive switching with resistance ratio of >30. Besides, improved resistive switching performance in...
We demonstrate a fiber ring laser based on a single-walled carbon nanotube (SWCNT) wall paper absorber. It is found that the proposed Yb-doped fiber laser can either be operated in the mode-locked states or Q-switched states. First, SWCNT wall paper acts as a mode locker when the pump power is below 80 mW. Self-started mode locking can be obtained when the pump power is about 47 mW. The proposed Yb-doped...
In this study, the characteristics of non-polar double heterojunction GaN/ InxGa1−xN solar cells with various indium contents are numerically investigated under AM 1.5 global spectrum using finite element analysis. By smoothing the interface band edge offset with graded junction, we see the enhancement on short circuit current and power conversion efficiency. The maximum efficiency of the simulation...
In order to obtain low threshold VCSbLs high retlectivity mirrors are crucial in their designs. Typically used Distribute Bragg Reflectors (DBR) provide reflectivity over 99.8 % in the spectral range of 70 nm. To achieve polarization control numerous of shallow etchings approaches has been proposed but already lastly developed High Contrast Grating (HCG) has an ability to discard one of the mode polarization...
The light trapping effect of a textured polydimethylsiloxane (PDMS) film on the suppression of surface reflection in a-Si:H solar cell is investigated. The angular dependence of scattered light from this PDMS film was measured and a symmetric scattering intensity peak was found at +/− 20°. The enhancement of power conversion efficiency in the a-Si:H solar cell with textured PDMS film can reach 16...
Individualized disease diagnosis and therapy has emerged as a new direction in the research of future medication. Over the past several years, innovative approaches based on microelectromechanical system (MEMS) technology have demonstrated promising potential in individualized therapy. In this contribution, a sustainable approach for the individualized treatment of chronic disease is presented using...
Intensive biological research has been directed towards why and how cells respond to a dynamic environment. Microfabrication has emerged as crucial tool to capture dynamic response. Our current study describes the approaches taken to fabricate, optimize, and validate a biocompatible device. Our experimental observations revealed that attempt to increase the channel depth induced surface roughness,...
Silicon carbide is a versatile material amenable to a variety of applications ranging from electrical insulation, surface passivation and diffusion barrier to optical devices. The DC saddle-field plasma enhanced chemical vapour technique is an alternative large area deposition technique. Here we report on the synthesis of stoichiometric hydrogenated amorphous silicon using the dc saddle-field PECVD...
The electron beam lithography system is a kind of important nanofabrication equipment with high resolution and excellent flexibility. In this paper, nanometer electron beam lithography (EBL) system based on scanning electron microscope is introduced. Its main components include a modified SEM, a laser interferometer controlled stage, a versatile high speed pattern generator, and a fully functional...
In-Ga-Zn oxide (IGZO) TFTs was fabricated by ink-jet printing technology on a silicon substrate with SiO2 on top. The device fabrication process includes printing ITO electrodes and IGZO semiconductor layer. A typical printed TFT shows a mobility of 0.32 cm2/V s and a contact resistance of ∼1 MΩ. Device performance was further improved by inserting an IZO layer between the source/drain electrode and...
In this paper, we suggest a simple and inexpensive method for the enhancement of binding performance with low pressure drop using density difference between core fluid and sheath fluid. Simulations and parametric studies of the method have been performed using computational fluid dynamics (CFD) simulation program and the results were validated by fluorescence experiments using fluorescent polystyrene...
A novel density control of carbon nanotubes is fabricated using partial oxidation of catalyst metal prior to the CNTs growth. The results show that CNTs are aligned, closely spaced, and divided into two groups with some long nanotubes protruding among short ones. Field emission improvement is achieved due to those long nanotubes are subjected less field screening effect from the surrounding nanotubes...
Bi0.9Gd0.1FeO3 (BGFO) thin films were deposited on Pt(111)/Ti/SiO2/Si(100) substrates using the sol-gel method. The thin films showed ferromagnetic properties with remnant magnetization (Mr) of 1.2 emu/g and saturation magnetization (Ms) of 5.3 emu/g. It was found that more than one conduction mechanism is involved in the electric field range used in these experiments. In the low electric field region,...
Monodisperse colloidal particles have attracted much attention not only for their scientific interest but also for many technological applications. However, many kinds of toxic chemicals or solvents are usually involved in the particle preparation process. Recently, anionie surfactants derived from diverse amino acids have been applied to the synthesis of nanosized materials. Amino acid is non-toxic...
In the past decade, bio-inspired chemistry using organized biomolecules, such as peptides, proteins, viruses, and enzymes, has demonstrated the power for assembling and structure-directing small species into unique materials due to their highly elaborate, self-assembling capability in nature, leading to the emergence of unique physiological properties. In this work, we used Poly-L-Lysine (PLL) or...
Conventional flash memory, utilizing floating gate as charge storage nodes, had met the leakage challenges as the devices tend to be scaling down and have high densities. Nanocrystal (NC) floating gate memory devices, containing nanocrystals as the discrete charge traps, have attracted attention as strong candidates to act as nonvolatile memories devices due to their scalability, electrical isolation...
We prpose Al-doped zinc oxide (AZO) grown on sapphire substrate using dual-plasma-enhanced metal-organic chemical vapor deposition (DPEMOCVD). The crystalline quality, optical properties, and electrical characteristics of AZO depend on the deposition temperature. The AZO thin film grown at 185 ºC shows the highest intensity of (002) preferent orientation for X-ray diffraction (XRD) pattern, highest...
In this work, ZnO, Al-doped ZnO (AZO) and Mg-doped ZnO (MZO) thin films were deposited onto glass substrates by sol-gel spin-coating method. The doping composition was varied from 0–10 at.%. Structural properties and surface morphologies of as-prepared films were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). Optical properties of the films were interpreted from their...
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