Abstract: The present invention discloses a back contact solar cell. The back contact solar cell includes a semiconductor substrate having a front surface and a rear surface; a first conductive type semiconductor region having a first conductive type and a second conductive type semiconductor region having a second conductive type at an interval on the rear surface of the semiconductor substrate. Furthermore, the rear surface of the semiconductor substrate has a texturing structure at the interval between the first conductive type semiconductor region and the second conductive type semiconductor region.

Abstract: The present invention discloses a back contact solar cell comprising: a first conductive type semiconductor substrate having a front surface and a rear surface of a texturing structure; an oxide layer formed on the front surface of the substrate; at least one first conductive type semiconductor region and second conductive type semiconductor region alternatively formed at predetermined intervals on the rear surface of the substrate; an oxide layer formed on the remaining rear surface of the substrate except for the first conductive type semiconductor region and the second conductive type semiconductor region; and electrodes formed on each of the first conductive type semiconductor region and the second conductive type semiconductor region.

Abstract: The present invention discloses a back contact solar cell. The back contact solar cell includes a semiconductor substrate having a front surface and a rear surface; a first conductive type semiconductor region having a first conductive type and a second conductive type semiconductor region having a second conductive type at an interval on the rear surface of the semiconductor substrate. Furthermore, the rear surface of the semiconductor substrate has a texturing structure at the interval between the first conductive type semiconductor region and the second conductive type semiconductor region.

Abstract: The present invention discloses a back contact solar cell. The back contact solar cell includes a semiconductor substrate having a front surface and a rear surface; and a first conductive type semiconductor region having a first conductive type and a second conductive type semiconductor region having a second conductive type, the first conductive type semiconductor region and the second conductive type semiconductor region being disposed with an interval on the rear surface of the semiconductor substrate. In addition, the rear surface of the semiconductor substrate has a texturing structure at the interval between the first conductive type semiconductor region and the second conductive type semiconductor region.

Abstract: Discussed is a fabrication method of a solar cell according to an embodiment of the invention, which includes forming an electrode material on a semiconductor substrate for the solar cell; and forming an electrode by heat treating the electrode material by laser irradiation, wherein the electrode material comprises at least one of an electrode paste, electrode ink and aerosol for the electrode.

Abstract: Disclosed are a laser firing apparatus for a high efficiency solar cell including laser generating unit and a fabrication method thereof. The laser firing apparatus for a high efficiency solar cell includes at least one laser generating unit that irradiates a laser irradiation on to an electrode region formed on a semiconductor substrate for the solar cell and heat-treats the electrode region. In addition, the fabrication method of a solar cell includes forming an electrode material on a semiconductor substrate for the solar cell; and forming an electrode by heat treating the electrode material by laser irradiation.

Abstract: The present invention discloses a back contact solar cell comprising: a first conductive type semiconductor substrate having a front surface and a rear surface of a texturing structure; an oxide layer formed on the front surface of the substrate; at least one first conductive type semiconductor region and second conductive type semiconductor region alternatively formed at predetermined intervals on the rear surface of the substrate; an oxide layer formed on the remaining rear surface of the substrate except for the first conductive type semiconductor region and the second conductive type semiconductor region; and electrodes formed on each of the first conductive type semiconductor region and the second conductive type semiconductor region.

Abstract: Disclosed are a laser firing apparatus for a high efficiency solar cell including laser generating unit and a fabrication method thereof. The laser firing apparatus for a high efficiency solar cell includes at least one laser generating unit that irradiates a laser irradiation on to an electrode region formed on a semiconductor substrate for the solar cell and heat-treats the electrode region. In addition, the fabrication method of a solar cell includes forming an electrode material on a semiconductor substrate for the solar cell; and forming an electrode by heat treating the electrode material by laser irradiation.

Abstract: The present invention relates to a photovoltaic conversion apparatus including a by-pass diode and a manufacturing method thereof. The photovoltaic conversion apparatus of the present invention comprises at least one unit solar cell module configured of at least one unit solar cell; and a by-pass solar cell module including at least one solar cell electrically connected to the unit solar cell to by-pass current. According to the present invention, a photovoltaic conversion apparatus having high photoelectric conversion efficiency can be manufactured. Also, the photovoltaic conversion apparatus will contribute to earths environmental conservation as the next clean energy source and can be directly applied to private facilities, public facilities, military facilities, etc., to create enormous economic value.

Abstract: A photoelectric conversion device includes at least one p-type semiconductor layer made of amorphous like hydrogenated carbon film or diamond like carbon (DLC) film doped with acceptor impurities such as boron (B). In a solar cell having a photoelectric conversion region, hydrogenated carbon is used as substances forming a p-type semiconductor layer, making it possible to provide a solar cell with high photoelectric conversion efficiency.

Abstract: A negative ion generator using a carbon fiber can facilitate its manufacturing process, improve negative ion generation efficiency and implement improved antimicrobial and sterilizing functions by distributing metallic particles in an activated carbon fiber and then applying a voltage thereto. To this end, the negative ion generator comprises: a carbon fiber in which metallic particles are distributed; an electrode connected to the carbon fiber and applying a voltage thereto; and a power unit for supplying power to the electrode.

Abstract: An array of M.times.N thin film actuated mirrors for use in an optical projection system, the array comprises an active matrix including a substrate and an array of M.times.N connecting terminals and an array of M.times.N actuating structures. Each of the actuating mirror structures includes a first thin film electrode, a barrier member, a thin film electrodisplacive member, a second thin film electrode and an elastic member. In order to improve mirror morphology and improve the adhesivity between thin films, the barrier layer is placed on top of the thin film electrodisplacive layer and the top surface of second thin film layer is ion-damaged by using an ion beam, respectively.