Abstract:
Disclosed are a silicon wafer having a complex structure, a method of fabricating the same, and a solar cell using the same, wherein the silicon wafer is configured such that an oriented silicon wafer has a pyramid pattern formed through wet etching and additionally has nanowires formed in the direction in which silicon crystals are oriented on the pyramid pattern, and is further doped with POCl3.
Abstract:
The present invention relates to a shingled solar cell panel for producing a string in which a plurality of strips are partially overlapped with each other, and for electrically connecting the string and the string, and a method for producing the same, the method comprises providing a wafer made of a HIT in which a plurality of conductive layers are formed on upper and lower portions thereof, respectively, forming an adhesive layer by applying a conductive adhesive on the upper conductive layer, dividing the wafer on which the adhesive layer is formed into a plurality of strips, forming a string by overlapping a lower conductive layer of another strip on an area where an adhesive layer is provided among the divided strips. Accordingly, the upper conductive layer and the lower conductive layer of each of the plurality of strips can be configured to be electrically bonded via only the adhesive layer to provide a shingled solar cell panel at low cost.
Abstract:
Disclosed are a high-power shingled photovoltaic string controllable in length and width and a method for manufacturing a module thereof. The method for manufacturing a high-power shingled photovoltaic module comprises the steps of: primarily cutting a bulk silicon substrate along a first cut line parallel to a bus bar electrode using laser scribing, thereby dividing the bulk silicon substrate into unit cells; forming an intermediate processing junction substrate by shingled-joining a plurality of unit cells according to the length of a string; forming the string by secondarily cutting the intermediate processing junction substrate seated on a substrate fixing jig, the intermediate processing junction substrate being cut along a second cut line that is perpendicular to the bus bas electrode and set according to the width of the string; and laminating a protective member on the surfaces of a plurality of strings to form a photovoltaic module.
Abstract:
Disclosed is a method of preparing a cathode electrode material for a secondary battery, including a hydrate precursor preparation step of preparing a manganese phosphate hydrate precursor using a coprecipitation process, a synthetic powder preparation step of preparing a synthetic powder by mixing the manganese phosphate hydrate precursor in a powder form with lithium phosphate and carbon, an oxide material powder preparation step of preparing a lithium manganese phosphate oxide material powder by milling and annealing the synthetic powder, a composite powder preparation step of preparing a composite powder by mixing the lithium manganese phosphate oxide material powder with a Li2MnO3-based cathode material, and a slurry preparation step of preparing a slurry by mixing the composite powder with a conductor and a binder.
Abstract:
Disclosed are a silicon substrate for a solar cell and a method of manufacturing the same, wherein the reflectance of solar light can be decreased by gap-filling with AZO, and electrical properties, especially resistivity, can be reduced through e-beam irradiation, thus maximizing the cell efficiency and improving the electrical properties of AZO applied to a silicon solar cell.
Abstract:
Disclosed are a BIPV-applicable high-power shingled photovoltaic module and a manufacturing method therefor, the module comprising: a solar panel having a shingled array structure; a first sealant stacked on the solar panel so as to protect the solar panel; a second sealant stacked under the solar panel in order to protect the solar panel; a front cover through which the sunlight passes, and which is stacked on the first sealant so as to protect the first sealant; and a first back sheet stacked under the second sealant in order to protect the solar panel from the outside environment, and thus aesthetic impression and reflectance reduction of a high-power shingled photovoltaic module are increased so that use as an external design element of a building is possible.
Abstract:
A method of manufacturing a carrier-selective contact junction silicon solar cell includes: preparing a conductive silicon substrate; forming a first passivation layer and a second passivation layer on and under the conductive silicon substrate, respectively; forming an electron-selective contact layer under the second passivation layer; forming a hole-selective contact layer on the first passivation layer; forming an upper transparent electrode on the hole-selective contact layer; forming an upper metal electrode on the upper transparent electrode; and forming a lower metal electrode under the electron-selective contact layer. In forming the hole-selective contact layer, a sandwich-structured multilayer film is formed by depositing a copper iodide thin film on a top surface and a bottom surface of an iodine thin film, and a single-film copper iodide thin film is formed by low-temperature annealing the sandwich-structured multilayer film.
Abstract:
The disclosed invention provides a photovoltaic module with an improved electrode structure of a solar cell and having any of various shapes. The photovoltaic module includes electrode members each including a finger electrode and a busbar electrode on a front surface of a solar cell to correspond to the number of divided cells, wherein the finger electrode is disposed as a plurality of finger electrodes in a first direction parallel to a short side of a divided unit cell, and the busbar electrode includes a collection electrode line which extends in a second direction parallel to a long side of the divided unit cell and connects ends of the plurality of finger electrodes and a connecting electrode line which is branched off from an end of the collection electrode line and extends in the first direction to be electrically connected to another unit cell.
Abstract:
In a carrier-selective contact junction silicon solar cell according to the present invention, a copper iodine thin film as a hole-selective contact layer is formed through low-temperature annealing so that excellent p-type semiconductor properties are maintained, and electrical conductivity and passivation properties become excellent, thereby improving photoelectric conversion efficiency.