Abstract:
According to example embodiments, a graphene device includes a first electrode, a first insulation layer on the first electrode, an information storage layer on the first insulation layer, a second insulation layer on the information storage layer, a graphene layer on the second insulation layer, a third insulation layer on a first region of the graphene layer, a second electrode on the third insulation layer, and a third electrode on a second region of the graphene layer.
Abstract:
Provided are nonvolatile memory transistors and devices including the nonvolatile memory transistors. A nonvolatile memory transistor may include a channel element, a gate electrode corresponding to the channel element, a gate insulation layer between the channel element and the gate electrode, an ionic species moving layer between the gate insulation layer and the gate electrode, and a source and a drain separated from each other with respect to the channel element. A motion of an ionic species at the ionic species moving layer occurs according to a voltage applied to the gate electrode. A threshold voltage changes according to the motion of the ionic species. The nonvolatile memory transistor has a multi-level characteristic.
Abstract:
Provided are nonvolatile memory transistors and devices including the nonvolatile memory transistors. A nonvolatile memory transistor may include a channel element, a gate electrode corresponding to the channel element, a gate insulation layer between the channel element and the gate electrode, an ionic species moving layer between the gate insulation layer and the gate electrode, and a source and a drain separated from each other with respect to the channel element. A motion of an ionic species at the ionic species moving layer occurs according to a voltage applied to the gate electrode. A threshold voltage changes according to the motion of the ionic species. The nonvolatile memory transistor has a multi-level characteristic.
Abstract:
A color optical pen includes a tip unit, a pen body unit attached to the tip unit; a pressure sensor that is disposed in the tip unit and configured to sense at least contact between a display unit of a terminal device and the tip unit; a light source that is disposed in the pen body unit and is configured to output light through the tip unit, if the pressure sensor senses the contact; a color selection switch that is disposed on the pen body, the color selection switch configured to select a color in response to operation by a user; and a driver configured to drive the light source at a frequency or pattern based on operation of the color selection switch.
Abstract:
A graphene device and an electronic apparatus including the same are provided. According to example embodiments, the graphene device includes a transistor including a source, a gate, and a drain, an active layer through which carriers move, and a graphene layer between the gate and the active layer. The graphene layer may be configured to function both as an electrode of the active layer and a channel layer of the transistor.
Abstract:
A graphene device including separated junction contacts and a method of manufacturing the same are disclosed. The graphene device is a field effect transistor (FET) in which graphene is used as a channel. A source electrode and a drain electrode do not directly contact the graphene channel, and junction contacts formed by doping semiconductor are separately disposed between the graphene channel and the source electrode and between the graphene channel and the drain electrode. Therefore, in an off state where a voltage is not applied to a gate electrode, due to a barrier between the graphene channel and the junction contacts, carriers may not move. As a result, the graphene device may have low current in the off state.