摘要:
Provided is a method for fabricating a photoelectric conversion device in which current is prevented as much as possible from leaking via an intermediate contact layer separating groove. The method includes: a process of forming a top layer mainly containing amorphous silicon; a process of forming on the top layer an intermediate contact layer electrically and optically connected to the top layer; a process of removing the intermediate contact layer through irradiation with a pulsed laser and forming an intermediate contact layer separating groove that reaches the top layer to separate the intermediate contact layer; and a process of forming, on the intermediate contact layer and in the intermediate contact layer separating groove, a bottom layer that mainly contains microcrystalline silicon and that is electrically and optically connected to the intermediate contact layer. The intermediate contact layer separating groove is terminated in an i-layer of the top layer.
摘要:
Provided is a photoelectric conversion device fabrication method in which current leakage from an intermediate contact layer via an intermediate-contact-layer separating groove is prevented as much as possible. Included are a step of film-forming a top layer having amorphous silicon as a main component; a step of film-forming, on the top layer, an intermediate contact layer electrically and optically connected thereto; a step of separating the intermediate contact layer by removing the intermediate contact layer by irradiating it with a pulsed laser, forming an intermediate-contact-layer separating groove that reaches the top layer; and a step of film-forming, on the intermediate contact layer and inside the intermediate-contact-layer separating groove, a bottom layer electrically and optically connected thereto and having microcrystalline silicon as a main component. A pulsed laser having a pulse width of 10 ps to 750 ps, inclusive, is used as the pulsed laser for separating the intermediate contact layer.
摘要:
Provided is a photoelectric conversion device fabrication method in which current leakage from an intermediate contact layer via an intermediate-contact-layer separating groove is prevented as much as possible. Included are a step of film-forming a top layer having amorphous silicon as a main component; a step of film-forming, on the top layer, an intermediate contact layer electrically and optically connected thereto; a step of separating the intermediate contact layer by removing the intermediate contact layer by irradiating it with a pulsed laser, forming an intermediate-contact-layer separating groove that reaches the top layer; and a step of film-forming, on the intermediate contact layer and inside the intermediate-contact-layer separating groove, a bottom layer electrically and optically connected thereto and having microcrystalline silicon as a main component. A pulsed laser having a pulse width of 10 ps to 750 ps, inclusive, is used as the pulsed laser for separating the intermediate contact layer.
摘要:
Provided is a method for manufacturing a photoelectric-conversion-device capable of controlling the groove depth of a processed groove to a desired value. The method for manufacturing a photoelectric conversion device (10) includes a groove forming step of irradiating an intermediate-contact-layer separating groove (15) constituting a photoelectric conversion device (10) with a picosecond laser and of moving the picosecond laser relative to the intermediate-contact-layer separating groove (93), thereby forming a processed groove (15) in a predetermined scanning direction. In the groove forming step, interference fringes arranged in parallel in one direction are formed in an irradiated area corresponding to a beam diameter of the picosecond laser, and the picosecond laser is relatively moved such that the interference fringes are joined in the scanning direction.
摘要:
Provided is a method for manufacturing a photoelectric-conversion-device capable of controlling the groove depth of a processed groove to a desired value. The method for manufacturing a photoelectric conversion device (10) includes a groove forming step of irradiating an intermediate-contact-layer separating groove (15) constituting a photoelectric conversion device (10) with a picosecond laser and of moving the picosecond laser relative to the intermediate-contact-layer separating groove (93), thereby forming a processed groove (15) in a predetermined scanning direction. In the groove forming step, interference fringes arranged in parallel in one direction are formed in an irradiated area corresponding to a beam diameter of the picosecond laser, and the picosecond laser is relatively moved such that the interference fringes are joined in the scanning direction.
摘要:
A hybrid welding apparatus for subjecting a base metal to gas-shielded arc welding and laser welding comprises a laser generator for emitting a laser beam and a condenser optical system for condensing the laser beam to laser weld the base metal. The condenser optical system includes a plurality of lenses, each having a hole portion in the center thereof. A tubular supply holder for supplying a welding wire is passed through these respective hole portions of the lenses and located substantially coaxially with the axis of the condenser optical system. The laser beam and welding wire to be applied to the base metal are arranged coaxially, so that laser-welding and arc-shielded welding can be simultaneously performed with a wide angle between the welding head and a bevel of the base metal, thereby deepening penetration of the weld at an increased welding speed.
摘要:
A weld zone of T-piping and its neighborhood are efficiently laser-heated to remove residual stress. For this purpose, the weld zone of a T-piping (50) is irradiated and heated with a laser beam emitted from a laser head (10) to remove residual stress. At this time, a rotating travel cart (3) travels along a ring rail (2) to adjust the position of the laser head (10) in a θ-direction, a vertical slide (4) slides to adjust the position of the laser head (10) in a Z-direction, a radial slide (5) slides to adjust the position of the laser head (10) in an L-direction, an arcuate piece slide (7) slides along an arcuate piece to adjust the α-direction of the laser head (10), a laser head support portion (9) turns to adjust the β-direction of the laser head (10), and oscillation adjusts the position of the laser head (10) in a γ-direction.
摘要:
A coaxial laser beam machining head, and a laser beam machining apparatus having it are provided. The head is small in size, free from the risk of damaging optical instruments, and inexpensive. The head comprises a collimating lens array, a first reflecting mirror for dividing laser light into a first divisional laser beam and a second divisional laser beam, a second reflecting mirror for further reflecting the first divisional laser beam to form a space portion between both divisional laser beams, a focusing lens array for focusing both divisional laser beams onto a portion to be welded, and a GMA electrode disposed in the space portion coaxially with the laser beams; or comprises a collimating lens array, a first reflecting mirror for reflecting part of laser light to form a space portion in a body of the laser light, a second reflecting mirror for further reflecting the part of the laser light, a focusing lens array for focusing the body of the laser light and the part of the laser light onto a portion to be welded, and a GMA electrode disposed in the space portion coaxially with the body of the laser light.
摘要:
In a welding system for performing butt welding which comprises butting the end surfaces of steel plates, materials to be welded, placed on the upper surface of a table of a welding stage and welding the end surfaces together, a welding head is a laser/arc combined welding head for simultaneously performing laser light irradiation and arc discharge of the materials 38 to be welded, thereby welding the materials to be welded, and the position of an arc electrode 40 in an up-and-down direction relative to the materials 38 to be welded, the position of the arc electrode in a direction perpendicular to the direction of the optical axis of laser light 32 applied to the materials 38 to be welded, and the inclination angle of the arc electrode relative to the optical axis of the laser light 32 can be adjusted.
摘要:
A laser beam machining head includes a dividing optical system for dividing laser light into two separate laser beams, and providing spacing therebetween; a condensing optical system for condensing the separate laser beams into condensed laser light, and projecting it onto a cutting site of an object to be cut; and an inner assist gas nozzle placed between the separate laser beams, a width of an opening of a tip portion of the inner assist gas nozzle being nearly equal to a cutting width. Or the tip opening of the inner assist gas nozzle is slender; or its tip side is inclined, and the angle of inclination is variable; or the relative positions of the inner assist gas nozzle and a workpiece, or the relative positions of the focal position of the condensing optical system and the workpiece are variable independently; or an outer assist gas nozzle surrounding the separate laser beams is provided.