Abstract:
Provided are a compound semiconductor device and a manufacturing method thereof. A substrate and a graphene oxide layer are provided on the substrate. A first compound semiconductor layer is provided on the graphene oxide layer. The first compound semiconductor layer is selectively grown from the substrate exposed by the graphene oxide.
Abstract:
A compound semiconductor device and method of manufacturing the same. The method includes coating a plurality of spherical balls on a substrate and selectively growing a compound semiconductor thin film on the substrate on which the spherical balls are coated. The entire process can be simplified and a high-quality compound semiconductor thin film can be grown in a short amount of time in comparison to an epitaxial lateral overgrowth (ELO) method.
Abstract:
Disclosed is a photocatalyst having a matrix which comprises a substrate and oxide-based nanomaterial formed on the substrate. The photocatalyst has a ratio of area to volume that is higher than a conventional photocatalyst having the same components, and also has a nano-sized photocatalytic layer. Thereby, it has excellent photolytic properties.
Abstract:
A heterojunction structure composed of a nitride semiconductor thin film and nanostructures epitaxially grown thereon exhibits high luminescence efficiency property due to facilitated tunneling of electrons through the nano-sized junction, and thus can be advantageously used in light emitting devices.
Abstract:
Provided are a nitride semiconductor device and method of manufacturing the same. In the method, semiconductor nanorods are vertically grown on a substrate, and then a nitride semiconductor thin film is deposited on the substrate having the semiconductor nanorods. Accordingly, a high-quality nitride semiconductor thin film can be deposited on a variety of inexpensive, large-sized substrates. Also, because the nitride semiconductor thin film containing the semiconductor nanorods can easily emit light through openings between the nanorods, internal scattering can be greatly reduced. Thus, the nitride semiconductor thin film can be usefully employed in optical devices such as light emitting diodes and electronic devices.
Abstract:
A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
Abstract:
A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
Abstract:
Disclosed herein is an electrical light-emitting device including a transparent conductive nanorod type electrode, in which transparent conductive nanorods grown perpendicular to a light-emitting layer are used as the electrode. Hence, light is not absorbed by the electrode, and tunneling easily occurs due to nanocontact of the nanorods, thus increasing current injection efficiency, and also, total internal reflections decrease. Thereby, the light-emitting device according to this invention has light-emitting properties and luminous efficiency superior to conventional light-emitting devices, including metal electrodes or thin film type transparent electrodes.
Abstract:
A heterojunction structure composed of a nitride semiconductor thin film and nanostructures epitaxially grown thereon exhibits high luminescence efficiency property due to facilitated tunneling of electrons through the nano-sized junction, and thus can be advantageously used in light emitting devices.