Abstract: The present disclosure relates to a resistive random access memory device and a preparing method of the resistive random access memory device, including: a first resistance change layer formed on a first electrode and comprising an organic metal halide having a three-dimensional perovskite crystal structure; a second resistance change layer formed on the first resistance change layer and comprising an organic metal halide having a two-dimensional perovskite crystal structure; and a second electrode formed on the second resistance change layer.

Abstract: The present disclosure relates to a resistive random access memory device and a preparing method thereof.

Abstract: An apparatus and method for store analysis are provided. According to the embodiments of the present disclosure, customer congestion, sales information and a degree of correlation between the ROIs are analyzed for each of the ROIs of a user in a store, so that it is possible to provide information for optimizing locations of products displayed in the store, thereby making it possible to increase the sales of the store.

Abstract: The present disclosure relates to a method of fabricating a perovskite solar cell, including: forming an electron transport layer on a substrate; forming a light absorbing layer containing a perovskite material on the electron transport layer; forming a hole transport layer on the light absorbing layer; and forming an electrode on the hole transport layer. Herein, the forming of the light absorbing layer is performed by impregnating the substrate on which the electron transport layer is formed in a nonpolar solvent and performing a heat treatment thereto.

Abstract: The present invention relates to a method which can effectively remove perovskite light absorbers, hole transport layers, metal electrodes, and the like by immersing a waste perovskite-based photoelectric conversion element module in a cleaning solution under predetermined conditions. The present invention can recover a substrate from the waste module and manufacture a photoelectric conversion element having a photoelectric conversion efficiency level comparable to the initially high level again, using the same.

Abstract: The present disclosure relates to a method of synthesizing composites for removing heavy metals, including: preparing hollow hydroxyapatite particles including a functional group; preparing a composite in which magnetic oxide nanoparticles are combined on the hollow hydroxyapatite; and preparing a composite of hollow hydroxyapatite and metal particles by performing reduction annealing to the composite.

Abstract: Provided are a silver nanowire conductive film coated with an oxidation protection layer and a method for fabricating the same. A silver nanowire conductive film coated with an oxidation protection layer includes: a substrate; silver nanowires disposed on the substrate; and an oxidation protection layer coated on the silver nanowires, wherein the oxidation protection layer comprises an oxide.

Abstract: The present disclosure provides a method for producing beta-tricalcium phosphate spherical particles containing magnetic ions. The method includes mixing acidic amino acid monomers, metal salt of magnetic ions and metal salt of calcium ions in de-ionized water to form a first solution; dissolve phosphate in de-ionized water to form a second solution; mixing the first and second solutions to form a third solution; and performing hydrothermal synthesis of the third solution.

Abstract: Provided are an yttrium aluminum garnet (YAG) phosphor, YAG phosphor particles, and methods of fabricating the same. The method of fabricating an yttrium aluminum garnet (YAG) phosphor involves: dispersing aluminum hydroxide core particles in an aqueous solution comprising yttrium, urea, and a lanthanide element to form a shell on the aluminum hydroxide core particles; and calcining the aluminum hydroxide core particles with the shell formed thereon to obtain hollow YAG particles, in which the shell includes a compound of yttrium and a lanthanide element.

Abstract: A solar cell is disclosed. The solar cell includes a transparent conductive layer formed on a substrate, microstructures protruding vertically aslant from a surface of the transparent conductive layer, an electron transport layer configured to cover the microstructures and formed of an electron transport metal oxide, a light absorber adhered to inner pores and a surface of the electron transport layer, a hole transport layer configured to cover the surface of the electron transport layer and formed of a hole transport material, and an electrode formed on the hole transport layer. In the solar cell, the thickness of a light absorption layer can be maximized to obtain a high current density and high photoelectric conversion efficiency.

Abstract: The present disclosure relates to a method for controlling an icon display in a mobile terminal and a mobile terminal thereof, wherein the method comprises: generating a plurality of menu screens having a plurality of icons and displaying a first menu screen on a touch screen, the first menu screen being at least one of the plurality of menu screens; additionally displaying a set-up menu screen which is stored in a memory of the mobile terminal, the set-up menu screen including a menu icon; displaying a second menu screen if a flicking signal is generated on the first menu; and displaying an instant icon of a selected menu icon on the second menu icon if the selected menu icon of the set-up menu screen is moved to the second menu screen.

Abstract: A solar cell is disclosed. The solar cell includes a transparent conductive layer formed on a substrate, microstructures protruding vertically aslant from a surface of the transparent conductive layer, an electron transport layer configured to cover the microstructures and formed of an electron transport metal oxide, a light absorber adhered to inner pores and a surface of the electron transport layer, a hole transport layer configured to cover the surface of the electron transport layer and formed of a hole transport material, and an electrode formed on the hole transport layer. In the solar cell, the thickness of a light absorption layer can be maximized to obtain a high current density and high photoelectric conversion efficiency.

Abstract: Provided are a silver nanowire conductive film coated with an oxidation protection layer and a method for fabricating the same. A silver nanowire conductive film coated with an oxidation protection layer includes: a substrate; silver nanowires disposed on the substrate; and an oxidation protection layer coated on the silver nanowires, wherein the oxidation protection layer comprises an oxide.

Abstract: A titanium oxide nano tube material is configured so that crystal grains of a nano tube has a crystal structure oriented with the [001] direction of a tetragonal crystal system as a preferred direction. FWHM (Full Width at Half Maximum) of a rocking curve with respect to the (004) plane peak is 11.1 degrees to 20.3 degrees. The titanium oxide nano tube material has excellent photoelectric characteristics since the crystal grains of the nano tube are oriented with the (004) plane or the [001] direction of a tetragonal crystal system as a preferred direction.

Abstract: Provided are an yttrium aluminum garnet (YAG) phosphor, YAG phosphor particles, and methods of fabricating the same. The method of fabricating an yttrium aluminum garnet (YAG) phosphor involves: dispersing aluminum hydroxide core particles in an aqueous solution comprising yttrium, urea, and a lanthanide element to form a shell on the aluminum hydroxide core particles; and calcining the aluminum hydroxide core particles with the shell formed thereon to obtain hollow YAG particles, in which the shell includes a compound of yttrium and a lanthanide element.

Abstract: A titanium oxide nano tube material is configured so that crystal grains of a nano tube has a crystal structure oriented with the [001] direction of a tetragonal crystal system as a preferred direction. FWHM (Full Width at Half Maximum) of a rocking curve with respect to the (004) plane peak is 11.1 degrees to 20.3 degrees. The titanium oxide nano tube material has excellent photoelectric characteristics since the crystal grains of the nano tube are oriented with the (004) plane or the [001] direction of a tetragonal crystal system as a preferred direction.

Abstract: A hybrid switch includes a plurality of antenna ports, a switching module for setting up a path so that a signal received from a reader passes through a designated antenna port from among the plurality of antenna ports, an antenna sense module for determining whether antennas have been attached to the plurality of antenna ports, and a communication module for processing a communication signal with the reader or a communication signal with other switch. According to the present invention, an electric wave fading zone can be obviated and RFID tags can be more efficiently recognized by increasing the number of antenna ports, without generating problems, such as the attenuation of transmission output of a reader and a reduction of the recognition ratio due to a collision between tags resulting from the constant transmission of power of the reader.

Abstract: The present disclosure relates to a method for controlling an icon display in a mobile terminal and a mobile terminal thereof, wherein the method comprises: generating a plurality of menu screens having a plurality of icons and displaying a first menu screen on a touch screen, the first menu screen being at least one of the plurality of menu screens; additionally displaying a set-up menu screen which is stored in a memory of the mobile terminal, the set-up menu screen including a menu icon; displaying a second menu screen if a flicking signal is generated on the first menu; and displaying an instant icon of a selected menu icon on the second menu icon if the selected menu icon of the set-up menu screen is moved to the second menu screen.

Abstract: Disclosed herein are a method and an apparatus for preparing oxytitanium phthalocyanine as a charge generating material. The method comprises the steps of homogeneously mixing an oxytitanium phthalocyanine crude with an organic solvent while microwave energy having a frequency of 0.1˜100 GHz and a power of 10˜3,000 W and ultrasonic wave energy having a frequency of 1˜1,000 kHz and a power of 10˜5,000 W are applied thereto, and reacting the mixture at 30˜100° C. for 0.5˜5 hours. The apparatus comprises: a magnetron 1 capable of generating a frequency of 0.

Abstract: Disclosed is a method for providing photochemical activity by coating a nano-layer of metallic oxide with nano-sized micropores on the particles or film of titanium dioxide (TiO2). The method for coating the nano-layer of porous oxides with hyperfine nano-sized pores on titanium dioxide (TiO2), comprising producing the solution containing metallic salts, providing the solution of metallic salts with TiO2 powder, hydrating the metallic salts and coating the hydrates on the TiO2 powder surface, and forming oxides from the hydrates coated on the TiO2 powder surface. The formed porous oxide coating layer increases the absorption capacity of water or dye molecules by increasing the specific surface area of titanium dioxide (TiO2) particles, thereby improving a photocatalyst characteristic or dye-sensitized fuel cell characteristic of TiO2.