摘要:
Inverter logic devices include a gate oxide on a back substrate, a first graphene layer and a second graphene layer separated from each other on the gate oxide, a first electrode layer and a first semiconductor layer separated from each other on the first graphene layer, a second electrode layer and a second semiconductor layer separated from each other on the second graphene layer, and an output electrode on the first and second semiconductor layers and configured to output an output signal. The first semiconductor layer is doped with a different type of impurities selected from n-type impurities and p-type impurities than the second semiconductor layer.
摘要:
A method of transferring graphene includes patterning an upper surface of a substrate to form at least one trench therein, providing a graphene layer on the substrate, the graphene layer including an adhesive liquid thereon, pressing the graphene layer with respect to the substrate, and removing the adhesive liquid by drying the substrate.
摘要:
According to example embodiments, a graphene switching devices has a tunable barrier. The graphene switching device may include a gate substrate, a gate dielectric on the gate substrate, a graphene layer on the gate dielectric, a semiconductor layer and a first electrode sequentially stacked on a first region of the graphene layer, and a second electrode on a second region of the graphene layer. The semiconductor layer may be doped with one of an n-type impurity and a p-type impurity. The semiconductor layer may face the gate substrate with the graphene layer being between the semiconductor layer and the gate substrate. The second region of the graphene layer may be separated from the first region on the graphene layer.
摘要:
According to example embodiments, an electrode structure includes a graphene layer on a semiconductor layer and an electrode containing metal on the graphene layer. A field effect transistor (FET) may include the electrode structure.
摘要:
According to example embodiments, an electrode structure includes a graphene layer on a semiconductor layer and an electrode containing metal on the graphene layer. A field effect transistor (FET) may include the electrode structure.
摘要:
An inverter device including a tunable diode device and a diode device that includes a control terminal connected to an input terminal of the inverter device, an anode terminal connected to a high-level voltage terminal, and a cathode terminal connected to an output terminal of the inverter device, wherein the diode device is configured to turn on or off according to a voltage applied to the control terminal.
摘要:
According to an example embodiment, a method of operating a semiconductor device includes applying a first voltage to the variable resistance device so as to change a resistance value of the variable resistance device from a first resistance value to a second resistance value that is different from the first resistance value, sensing first current flowing through the variable resistance device to which the first voltage is applied, determining a second voltage used to change the resistance value of the variable resistance device from the second resistance value to the first resistance value based on a distribution of the sensed first current, and applying the determined second voltage to the variable resistance device.
摘要:
Disclosed is a method of selectively displaying comments posted by users. The method comprises setting, by a first user, a threshold value for use in determining whether to display comments posted by users of an Internet service; and sending, by the first user, a request for displaying a page of the Internet service. The requested page contains a comment or a title of a comment posted by a second user who is assigned a reputation index. The method further comprises displaying, on a screen associated with the first user, the requested page, wherein the comment or the title of the second user is selectively redacted based on comparison of the reputation index of the second user with the threshold value of the first user.
摘要:
According to an example embodiment, a method of operating a semiconductor device having a variable resistance device includes: applying a first voltage to the variable resistance device to change a resistance value of the variable resistance device from a first resistance value to a second resistance value that is different from the first resistance value; sensing a first current flowing through the variable resistance device to which the first voltage is applied; determining a second voltage used for changing the variable resistance device from the second resistance value to the first resistance value, based on a dispersion of the sensed first current; and applying the determined second voltage to the variable resistance device.
摘要:
According to an example embodiment, a method of operating a semiconductor device includes applying a first voltage to the variable resistance device so as to change a resistance value of the variable resistance device from a first resistance value to a second resistance value that is different from the first resistance value, sensing first current flowing through the variable resistance device to which the first voltage is applied, determining a second voltage used to change the resistance value of the variable resistance device from the second resistance value to the first resistance value based on a distribution of the sensed first current, and applying the determined second voltage to the variable resistance device.