Abstract: Disclosed are polycyclic aromatic compounds that can be employed in various organic layers of organic electroluminescent devices. Also disclosed are organic electroluminescent devices including the polycyclic aromatic compounds. The organic electroluminescent devices are highly efficient and long lasting and have greatly improved luminous efficiency.

Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.

Abstract: Disclosed are an electrode slurry for a fuel cell capable of forming a multilayer structure without an interface using a first support and a second support having different mesopore fractions and densities, a multilayer electrode structure using the same, and a manufacturing method thereof. The electrode slurry for a fuel cell includes a first catalyst including a first support on which a first metal is supported, a second catalyst including a second support on which a second metal is supported, an ionomer, and a solvent, the first support and the second support having different mesopore fractions and densities.

Abstract: The present invention relates to a novel polycyclic compound employed in an organic layer of an organoelectro luminescent device, wherein the organoelectro luminescent device employing the compound according to the present invention has remarkably improved luminous efficiency and a long lifespan. According to the present invention, it is possible to implement a highly efficient and long-life organoelectro luminescent device that can be effectively applied to various display devices.

Abstract: An electronic vaporizer for generating an aerosol includes a housing to be installed to an electronic device by being coupled to the electronic device through a connecting interface of the electronic device, and including: a connecting interface that receives power from a battery included in the electronic device when coupled to the connecting interface of the electronic device, a liquid storage for storing a liquid aerosol generating material and supplying the liquid aerosol generating material to a wick when the housing is disposed in a predetermined posture, an atomizer that includes a wick and a heater for generating an aerosol by heating the liquid aerosol generating material supplied to the wick, and a control circuit that controls heating of the heater for generating the aerosol, based on the power supplied from the battery.

Abstract: Provided is a method of manufacturing a see-through-type integrated solar cell and a method of manufacturing the same. The method comprises forming a first conductive material being apart and strip patterned on a transparent substrate so that the first conductive material comprises a predetermined space for enabling light to directly pass through the transparent substrate, forming a solar cell (semiconductor) layer, obliquely depositing a second conductive material and etching the solar cell layer using the second conductive material layer as a mask.

Abstract: The present invention relates to a transparent memory for a transparent electronic device. The transparent memory includes: a lower transparent electrode layer that is sequentially formed on a transparent substrate, and a data storage region and an upper transparent layer which are made of at least one transparent resistance-variable material layer. The transparent resistance-variable material layer has switching characteristics as a result of the resistance variance caused by the application of a certain voltage between the lower and upper transparent electrode layers. An optical band gap of the transparent resistance-variable material layer is 3 eV or more, and transmittivity of the material layer for visible rays is 80% or more. The invention provides transparent and resistance-variable memory that: has very high transparency and switching characteristics depending on resistance variation at a low switching voltage, and can maintain the switching characteristics thereof after a long time elapses.

Abstract: The present invention relates to a transparent memory for a transparent electronic device. The transparent memory includes: a lower transparent electrode layer that is sequentially formed on a transparent substrate, and a data storage region and an upper transparent layer which are made of at least one transparent resistance-variable material layer. The transparent resistance-variable material layer has switching characteristics as a result of the resistance variance caused by the application of a certain voltage between the lower and upper transparent electrode layers. An optical band gap of the transparent resistance-variable material layer is 3 eV or more, and transmittivity of the material layer for visible rays is 80% or more. The invention provides transparent and resistance-variable memory that: has very high transparency and switching characteristics depending on resistance variation at a low switching voltage, and can maintain the switching characteristics thereof after a long time elapses.

Abstract: Provided are an integrated thin-film solar cell and a method of manufacturing the same. The method comprises forming and patterning a conductive material to be adjacently spaced a predetermined distance apart from each other on a substrate; forming a solar cell (semiconductor) layer on the resultant substrate; obliquely depositing a first transparent conductive material on the solar cell layer; etching the solar cell layer using the first transparent conductive material as a mask; and obliquely depositing a second transparent conductive material on the resultant substrate, and electrically connecting the conductive material with the first transparent conductive material.

Abstract: Provided are an integrated thin-film solar cell and a method of manufacturing the same. The method comprises forming and patterning a conductive material to be adjacently spaced a predetermined distance apart from each other on a substrate; forming a solar cell (semiconductor) layer on the resultant substrate; obliquely depositing a first transparent conductive material on the solar cell layer; etching the solar cell layer using the first transparent conductive material as a mask; and obliquely depositing a second transparent conductive material on the resultant substrate, and electrically connecting the conductive material with the first transparent conductive material.

Abstract: Provided are an integrated thin-film solar cell and a method of manufacturing the same. The method comprises forming and patterning a conductive material to be adjacently spaced a predetermined distance apart from each other on a substrate; forming a solar cell (semiconductor) layer on the resultant substrate; obliquely depositing a first transparent conductive material on the solar cell layer; etching the solar cell layer using the first transparent conductive material as a mask; and obliquely depositing a second transparent conductive material on the resultant substrate, and electrically connecting the conductive material with the first transparent conductive material.