Manufacture method of flexible substrate and solar cell and production method thereof

Abstract

The invention provides a manufacture method of a flexible substrate, and a solar cell and a manufacture method thereof. The cloth-shaped or film-shaped flexible substrate is formed by processing composite particles formed by crystal nano powder with a light absorption function and high polymer materials through the steps of spinning, and weaving, rolling or casting by solvents; a back metal electrode and a transparent electrode are respectively formed on the surface of the substrate, and then the solar cell can be produced by packaging; furthermore, light absorption thin layers can be previously formed on two surfaces of the substrate so as to enable the light absorption effect to be continuous; by the acceleration of nucleation and the growth of crystal grains, the process time can be reduced or the process can be performed at a low temperature, the expansion coefficient difference between the flexible substrate and the metal electrode is reduced, and the packaging can be performed by using conventional materials, thus the effects of rapid process and reduced cost are achieved.

Description

technical field [0001] The invention relates to the technical field of flexible substrates, in particular to a method for manufacturing a flexible substrate, a solar cell and a method for manufacturing the same. Background technique [0002] In the prior art, solar cells are fabricated on flexible substrates, which are usually various flexible substrates commonly used in the market, and are coated with light absorbing layers, metal layers, contact window layers, etc. The layer needs high-temperature compounding and grain growth, which requires a temperature of 300 ° C or higher. At present, the thermal expansion difference between the flexible material with a temperature exceeding 300 ° C and the metal layer is usually too large, and cracks are prone to occur, which makes the solar cell Reduced lifespan. [0003] In addition, when the flexible substrate of metal thin plate is used, there are disadvantages such as insufficient bending degree, insufficient bonding strength be...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, solar cells are fabricated on flexible substrates, which are usually various flexible substrates commonly used in the market, and are coated with light absorbing layers, metal layers, contact window layers, etc. The layer needs high-temperature compounding and grain growth, which requires a temperature of 300 ° C or higher. At present, the thermal expansion difference between the flexible material with a temperature exceeding 300 ° C and the metal layer is usually too large, and cracks are prone to occur, which makes the solar cell Reduced lifespan

[0003] In addition, when the flexible substrate of metal thin plate is used, there are disadvantages such as insufficient bending degree, insufficient bonding strength between the metal and the packaging material, and limited selection of packaging materials. Therefore, a method that can improve the existing shortcomings is needed. flexible substrate

Images