The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A three-dimensional MnCo2S4@NiCo(OH)2 (MCS@NCOH) core-shell nanostructure is grown on nickel foam by a simple and facile method which includes a hydrothermal treatment and an electrochemical deposition. The MnCo2S4 (MCS) nanorod arrays not only show excellent electrochemical performance by themselves, but also use as effective scaffolds to load additional active materials for enhancing the capacitance...
A high-performance and flexible fiber-shaped supercapacitor (FSC) with organic-inorganic hybrid structure was fabricated. After adding a thin layer of conductive polymer polyaniline (PANI) as both active material and electron transport path on the manganese oxide (MnO2)-coated carbon fiber thread (CFT) electrode, the capacitance of the electrode was increased by 2530 %. These CFT-MnO2-PANI hybrid...
In this work, we investigate the static and dynamic gas response of Schottky diode based hydrogen sensor employing a Pt/WO3/n-type Si configuration. The role and importance of tungsten trioxide as an insulating layer within the device is discussed with respect to the measured electronic properties. The WO3 thin films were deposited using RF reactive magnetron sputtering. The surface morphology was...
Pentacene organic thin-film transistor (OTFT) with high-κ HfTiO gate dielectric has been fabricated. The effects of fluorine plasma and ammonia annealing on the properties of the OTFT have been studied. After treating the dielectric in the plasma, the carrier mobility of the transistor can be improved by about 5 times to 0.0883 cm2/V·s. Moreover, the fluorine plasma treatment can shift the threshold...
Copper phthalocyanine-based organic thin-film transistors (OTFTs) using ZrTaO high-k gate dielectric with different Ta contents have been fabricated and characterized. It is found that devices with more Ta incorporated in the dielectric film exhibit better electrical properties such as smaller leakage current density, larger breakdown field strength, smaller sub-threshold slope and larger on/off ratio...
CuPc-based organic thin-film transistor (OTFT) with high-k dielectric HfAlO as gate dielectric prepared by atomic layer deposition has been fabricated. Experimental results show that the HfAlO-OTFT has higher mobility, smaller sub-threshold slope and larger on/off ratio than the HfO2 sample. All these should be attributed to the addition of Al into the HfO2 film confirmed by X-ray photoelectron spectroscopy,...
OTFTs on glass with high-k material HfO2 as gate dielectric have been successfully fabricated. The devices show small sub-threshold slope, and thus are suitable for high-speed and low-power operations. This work also finds that OTFT with UV-ozone treatment has larger drain current, higher mobility, smaller sub-threshold slope and larger on/off ratio than the without UV-ozone treated sample. This demonstrates...
Hafnium oxide (HfO2) is successfully used as gate insulator for fabricating metal-insulator-SiC (MISiC) Schottky-diode hydrogen sensor. Sensors undergone N2 annealing at different temperatures are fabricated for investigation. The hydrogen-sensing properties of these samples are compared with each other by taking the measurements at high temperature under various hydrogen concentrations using a computer-controlled...
Pentacene-based organic thin-film transistor (OTFT) with HfO2 as gate dielectric is studied in this work. The HfO2 dielectric was prepared by RF sputtering at room temperature, and subsequently annealed in N2O or NH3 at 200degC. The OTFTs were characterized by IV measurement and 1/f noise measurement. The OTFTs show small threshold voltage and can operate at as low as 3 V. Results indicate that the...
Silicon dioxide deposited by RF sputtering is used as the gate insulator of Metal-Insulator-SiC (MISiC) Schottky-diode hydrogen sensors. Sensors with different gate insulator thicknesses are fabricated for investigation. Their hydrogen-sensing properties are compared with each other by taking measurements at various temperatures and hydrogen concentrations using a computer-controlled measurement system...
OTFTs with HfTiO2 as gate dielectric have been successfully fabricated. The devices show small threshold voltage and subthreshold slope, and thus are suitable for low-voltage and low-power applications. This work also finds that OTFT with gate dielectric annealed in N2O has larger dielectric constant, smaller threshold voltage, smaller subthreshold slope and larger on/off ratio than the N2-annealed...
A novel Schottky-diode hydrogen sensor with high-k material HfO2 as gate insulator has been fabricated and studied. The influences of hydrogen concentration and temperature on hydrogen-sensing performance of the device are investigated. Experimental results show that the sensor demonstrates high sensitivity, rapid and stable response, especially at a high operating temperature of 300degC. These sensing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.