A preparation process of light-transmitting copper indium gallium selenium battery components

Abstract

The invention relates to a preparation technology of a light transmission type CIGS cell assembly, and belongs to the technical field of solar cell processing. A light transmission groove (5) is etched in a bottom electrode (200), the bottom electrode (200) includes a first bottom electrode (201) and a second bottom electrode (202) respectively at the two sides of the light transmission groove (5), the bottom electrode (200) is plated with a light absorption layer (300), a serial-connected groove (6) is etched in the light absorption layer (300), the light absorption layer (300) is plated with an upper electrode (500), the light transmission groove (5) and the serial-connected groove (6) enable that the upper electrode (500) is connected with the first bottom electrode (201) and disconnected from the second bottom electrode (202), and an insulated groove (7) is etched in the upper electrode (500) on the first bottom electrode (201). A light transmission area is formed in the middle of a cell film, the upper electrode in the light transmission area is connected with the bottom electrode in series, light transmission is realized, and the cell film forms an integral body.

Description

technical field [0001] The invention discloses a preparation process of a light-transmitting copper indium gallium selenide battery component, which belongs to the technical field of solar battery processing. Background technique [0002] With the increasing environmental pollution, the development of clean energy has attracted more and more attention. The combination of photovoltaics and buildings is a new direction for the development of solar energy, and the preparation of building-integrated photovoltaic modules is a new point of competition in the field of photovoltaic manufacturing. In the long run, building integrated photovoltaics has a very broad market prospect, but the structural design of the light-transmitting groove of the light-transmitting module is an important factor restricting the reduction of its process cost. At present, the light-transmitting component is further processed on the basis of the conventional light-proof component, and the light-transmitt...

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Problems solved by technology

For details, refer to the attached figure 1 , the existing processing technology of light-transmitting components is to process multiple rows of battery films 2 on the substrate 1 first, and the adjacent battery films 2 are conducted through connecting parts. The interval between adjacent battery films 2 is very small and cannot transmit light. To achieve light transmission, laser etching is used to etch a plurality of light-transmitting regions 3 in the middle of the battery film 2, so that the original battery film 2 is divided into battery grids one by one, and the two sides of the substrate 1 are processed for confluence. Bar 4, use the bus bar 4 to connect the battery films 2 of each row, which not only increases the difficulty of production, but also cuts off more battery area, reduces the output power of the battery, increases the cost of the battery, and relatively Once the adjacent battery film 2 is disconnected or short-circuited, the entire row of battery film 2 will be scrapped, and the reliability is very low

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