cigs solar cell film production line

Abstract

The invention discloses a CIGS solar cell film production line. The CIGS solar cell film production line comprises a plurality of coating sub-lines. The sub-lines sequentially and independently conduct vertical coating on a film. Each sub-line at least comprises an unreeling chamber, a coating chamber and a reeling chamber in the film unfolding direction, wherein a main drive roller is arranged in the unreeling chamber and the reeling chamber, a plurality of transmission rollers are arranged in cavities of the sub-line, and a tension detection roller and a tension adjusting roller are arranged in at least one cavity of the sub-line. The tension detection rollers are adjacent to the tension adjusting rollers, the tension detection rollers are used for monitoring the tension of the film in real time, and the tension adjusting rollers adjust the rotation speed of the tension adjusting rollers according to the feedback of the tension detection rollers so as to adjust the transmission speed of the film in the cavities; and the tension adjusting rollers are non-transmission rollers, and the unfolding track that the film passes the tension detection rollers and the tension adjusting rollers is the nonlinear track. According to the provided CIGS solar cell film production line, the element diffusion path is short, intermediate products are avoided, element evaporation is avoided, the film efficiency is high, and the CIGS solar cell film production line is particularly suitable for large-area scale industrial production.

Description

technical field [0001] The invention relates to a CIGS solar cell film production line, belonging to the field of new energy manufacturing. Background technique [0002] CIGS solar cell, a chalcopyrite crystal thin film solar cell with an optimal ratio of four elements: Cu (copper), In (indium), Ga (gallium), and Se (selenium). CIGS solar cells have a layered structure and absorbing materials It belongs to group I-III-VI compounds, and its substrate is generally made of stainless steel, glass or flexible film substrate, which is the key technology for forming solar panels. This product has many advantages such as strong light absorption capacity, good power generation stability, high conversion efficiency, long daytime power generation time, high power generation, low production cost and short energy recovery cycle. CIGS solar cells generally use vacuum sputtering, evaporation or other non-vacuum methods to deposit multi-layer films respectively to form a P-N junction to fo...

AI Technical Summary

Problems solved by technology

But so far, this potential has not been fully realized. The most fundamental reason is that the traditional CIGS thin-film battery technology ("co-evaporation" and "post-selenization") has inherent defects, the process is too complicated, and the battery yield rate is generally lower than 60%. %, unable to reflect its low-cost advantage

In the prior art, the production of CIGS thin-film solar cells is based on the production equipment of glass substrates. Such equipment has low integration and cannot overcome the technical difficulties brought about by the nature of the thin film itself.

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