Manufacturing method of shielding frame and ultrathin substrate film solar cell

Abstract

The invention relates to a manufacturing method of a shielding frame and an ultrathin substrate film solar cell. The shielding frame is formed by a rectangular upper frame and a rectangular lower frame, which are up-down arranged in the thickness direction, so the effect of preventing the edge and back face of the ultrathin substrate from being plated the film can be achieved, the edge packaging is more reliable and reliability of an electronic device can be ensured for the long time. Different sizes of shielding frames are used in all film plating processes, so mutual insulation is formed among all film layers, and the edge of the device is prevented from having an electric leakage. During the film plating process, the shielding frame is used for pressing the edge of the ultrathin substrate, so the periphery of the ultrathin substrate is prevented from being cocked, and the substrate can be effectively heated, thereby ensuring uniformity of the plated film and improving performance of the film electronic device. By use of the shielding frame, an edge film layer removing procedure in the traditional process is omitted, so production technique is simplified, production efficiency is improved and damage to a cell sheet possibly caused by an edge removing process is avoided.

Description

technical field [0001] The invention relates to the manufacturing technology of thin-film solar cells, in particular to a shielding frame for manufacturing ultra-thin substrate thin-film solar cells and a method for manufacturing ultra-thin substrate thin-film solar cells using the shielding frame. Background technique [0002] When the thickness of the glass is lower than a certain value such as 0.7mm, it will show a certain degree of flexibility, and the thinner the glass, the more obvious the flexibility. For example, the Willow glass released by Corning Company has a thickness of 0.2mm and can be bent arbitrarily to make flexible electronic devices. , and can be attached to any surface. [0003] (https: / / www.corning.com / worldwide / en / products / display-glass / products / corning-willow-glass.html) [0004] Taking advantage of the flexibility of thin glass, people use thin glass as a substrate to make thin-film solar cells, and attach them to automobile glass with a certain cur...

AI Technical Summary

Problems solved by technology

The above-mentioned methods have their own limitations. For example, the method of edge grinding with grinding wheel or sandblasting is not suitable for thin glass substrates, because very thin and brittle substrates are extremely easy to be removed during the above-mentioned mechanical edge removal process. damage; another example is the lift-off method, which usually uses some volatile organic materials, such as photoresist, and the substances volatilized during the heating process of the coating film are likely to affect the coating effect; although the laser ablation method is used It is widely used in the edge removal of thin-film batteries, but requires expensive laser equipment, and there are reaction residues on the edge of the glass after laser ablation, and the final device reliability still strongly depends on the subsequent packaging process

Images