Abstract: A wirelessly chargeable electronic device according to various embodiments may comprise: a first circuit board; a second circuit board; a battery; a flexible printed circuit board (FPCB) electrically connecting the first circuit board and the second circuit board to each other; and a wireless charging antenna stacked on the FPBC, wherein at least a part of the FPBC is arranged overlap in the width range of a pattern of the wireless charging antenna.

Abstract: A dye-sensitized solar cell is provided. The solar cell includes a transparent substrate; a conductive transparent electrode formed on a surface of the transparent substrate; a metal oxide particle electrode layer in which a photosensitive dye capable of absorbing light is adsorbed; a counter electrode, and an electrolyte injected between the metal oxide particle electrode layer and the counter electrode. The metal oxide particle electrode layer comprises a first electrode layer comprising metal oxide particles and having a predetermined pattern formed thereon and a second electrode layer comprising metal oxide particles and formed on the first electrode layer. Refractive indexes of the first and second electrode layers are different from each other.

Abstract: A dye-sensitized solar cell is provided. The solar cell includes a transparent substrate; a conductive transparent electrode formed on a surface of the transparent substrate; a metal oxide particle electrode layer in which a photosensitive dye capable of absorbing light is adsorbed; a counter electrode, and an electrolyte injected between the metal oxide particle electrode layer and the counter electrode. The metal oxide particle electrode layer comprises a first electrode layer comprising metal oxide particles and having a predetermined pattern formed thereon and a second electrode layer comprising metal oxide particles and formed on the first electrode layer. Refractive indexes of the first and second electrode layers are different from each other.

Abstract: A photorefractive material provides a high photosensitivity without reduction. The material comprises a single crystal of terbium (Tb)-doped niobate or tantalate. The single crystal is a single crystal of lithium niobate (LiNbO3) whose molar fraction of [Li2O]/([Li2O]+[Nb2O5]) lies in a range of 0.482 to 0.505, or a single crystal of lithium tantalate (LiTaO3) whose molar fraction of [Li2O]/([Li2O]+[Ta2O5]) lies in a range of 0.482 to 0.505. The amount of terbium added in the photorefractive material ranges from 10 weight ppm to 1000 weight ppm.

Abstract: A hologram recording apparatus is capable of directing interferable signal light and reference light into a hologram recording medium to record an information signal carried by the signal light. The hologram recording medium is sensitive to a first light at a first wavelength in an ultraviolet or short-wavelength visible light band to develop light induced absorption. The apparatus includes a light source for irradiating the hologram recording medium with the first light, and a laser light source for irradiating the hologram recording medium with signal light and reference light at a second wavelength longer than the first wavelength after the first light is irradiated.

Abstract: A two-color holographic recording apparatus reduces error signals possibly included in reproduced digital data signals. The two-color holographic recording apparatus has first, second and third light shutters for passing or blocking gate light, signal light and reference light incident on a recording medium respectively, and a controller for controlling the respective states of the first, second and third light shutters.

Abstract: A two-color hologram recording/reproducing apparatus is capable of directing interferable signal light and reference light into a hologram recording medium to record an information signal carried by the signal light. The hologram recording medium is sensitive to a first light at a first wavelength in an ultraviolet or short-wavelength visible light band to develop light induced absorption. The apparatus includes a light source for irradiating the hologram recording medium with the first light, a laser light source for irradiating the hologram recording medium with signal light and reference light at a second wavelength longer than the first wavelength after the first light is irradiated, and a gate light source for directing gate light at a third wavelength into the hologram recording medium.