摘要:
Provided are a photoelectrode including a zinc oxide hemisphere, a method of fabricating the same, and a dye-sensitized solar cell using the same. The photoelectrode includes a conductive substrate, a zinc oxide hemisphere disposed on the conductive substrate, and a porous metal oxide layer covering the zinc oxide hemisphere. Light scattering effects of photoelectrodes can be increased, and recombination losses of electrons can be minimized to improve photovoltaic properties.
摘要:
An object of the present invention is to provide a light emitting diode having a heterogeneous material structure and a method of manufacturing thereof, in which efficiency of extracting light to outside is improved by forming depressions and prominences configured of heterogeneous materials different from each other before or in the middle of forming a semiconductor material on a substrate in order to improve the light extraction efficiency.
摘要:
The light extraction efficiency of a typical light-emitting diode (LED) is improved by incorporating one-dimensional ZnO nanorods. The light extraction efficiency is improved about 31% due to the waveguide effect of ZnO sub-microrods, compared to an LED without the nanorods. Other shapes of ZnO microrods and nanorods are produced using a simple non-catalytic wet chemical growth method at a low temperature on an indium-tin-oxide (ITO) top contact layer with no seed layer. The crystal morphology of a needle-like or flat top hexagonal structure and the density and size of ZnO microrods and nanorods are easily modified by controlling the pH value and growth time. The waveguide phenomenon in each ZnO rod is observed using confocal scanning electroluminescence microscopy (CSEM) and micro-electroluminescence spectra (MES).
摘要:
Disclosed is a light emitting diode having a multi-cell structure including a number of unit cells. The light emitting diode is capable of reducing light loss of the light emitting diode surface and improving light efficiency by bonding pads to be formed for contact between mesa etching regions for forming an electrode of the existing n-type semiconductor layers and p-type semiconductor layers. The light emitting diode is also capable of controlling chip size and manufacturing chips of different sizes from each other even when going through the same chip manufacturing process as the related art.
摘要:
Provided is a light-emitting diode having a wavelength conversion material and a method for fabricating the same. The light-emitting diode comprises: a base structure; a light-emitting diode chip arranged on the base structure; and a wavelength conversion material layer arranged on the light-emitting diode chip, such that the area adjacent the upper surface of the light-emitting diode chip is thicker than the area adjacent to the side surface of the light-emitting diode chip. In addition, the method for fabricating a light-emitting diode comprises: a step of arranging the light-emitting diode chip on the base structure; and a step of arranging a wavelength conversion material layer containing a light-transmitting photocurable material on the light-emitting diode chip, such that the area thereof adjacent to the upper surface of the light-emitting diode chip is thicker than the area thereof adjacent to the side surface of the light-emitting diode chip.
摘要:
A portable terminal having a long-stroke hinge is disclosed. The portable terminal includes a first main body, a second main body sliding on the first main body, a first member with elasticity having a first end fixed to the first main body and a second end that is horizontally moveable, and a second member having a first end rotatably coupled with the second end of the first member and a second end fixed to the second main body.
摘要:
An optical sheet includes a substrate onto which light is incident, and a convex part protruded from the substrate by a predetermined thickness. A thickness of the convex part increases from an edge to a center thereof.
摘要:
An optical sheet includes a substrate onto which light is incident, and a convex part protruded from the substrate by a predetermined thickness. A thickness of the convex part increases from an edge to a center thereof.
摘要:
Provided are embodiments of an optical sheet and backlight assemblies incorporating the optical sheet. The optical sheet can include a body and a plurality of protrusions. The protrusions are arranged on a surface of the body. A furrow pattern in which furrows are arranged is formed on the protrusion for scattering light.
摘要:
A laser video projector using an optical pumping valve is provided. The video projector according to the present invention forms an image using an optical pumping valve including a laser resonator for resonating light of a certain wavelength, an optical pumping source for performing pumping so that the laser resonator can generate a laser beam, and an optical valve for filtering the laser beam emitted from the laser resonator so that the filtered laser beam forms a picture instead of a cathode ray tube (CRT).