Solar cell module and method of fabricating the same

Abstract

A solar cell module and a method of fabricating the same are provided. The method includes providing a solution having a luminescent dye, mixing the solution with a first waveguide material to obtain a first mixture, and placing the first mixture and a second mixture comprising nano-powder and a second waveguide material into a mold to form a waveguide body having a first layer body and a second layer body stacked on the first layer body. The waveguide body has a top surface, a bottom surface opposing to the top surface, and a lateral surface connecting the top surface with the bottom surface. At least one solar cell is disposed in the mold and embedded in the waveguide body, to enlarge a light reception area and light collection.

Description

technical field [0001] The present invention relates to a solar battery module and a manufacturing method thereof, in particular to a method for preparing a solar battery module by casting molds and an integrally packaged solar battery module. Background technique [0002] At present, solar cells or photovoltaic cells are still high-cost products, so they cannot be popularized in daily life. Generally, solar cells can be divided into silicon crystal solar cells, concentrating solar cells and thin film solar cells. [0003] The photoelectric conversion efficiency of silicon solar cells has reached about 19 to 20%, and the conversion efficiency after packaging into solar cell modules is about 15 to 17%. Silicon solar cell modules mainly include glass, silicon solar cells, encapsulation materials (EVA, PVB, etc.) and insulating materials (PET, TPT, etc.), and are packaged by vacuum heat pressing. Although silicon solar cells are currently the largest and widely used in the ma...

AI Technical Summary

Problems solved by technology

However, due to the development of large-scale applications such as building-integrated photovoltaic modules (Building-integrated photovoltaic (BIPV)) and smart energy-saving windows, most of them use strong glass or transparent acrylic as substrates. However, these hard materials will limit its applicable range

In addition, solar cells and hard substrates must be fixed with optical glue or fixture fitting, which will also increase the complexity and difficulty of the process

[0007] Regarding the research on solar cells, it is known that US6,476,312B1 discloses the waveguide (Waveguide) characteristics of optical materials, such as the action of a concentrator (Concentrator), which gathers the light of quantum dots to the side of the solar cell, which uses light-emitting quantum Dots are used as dyes, and solar cells are pasted with optical glue. However, the post-processing process of using optical glue to paste solar cells in this patent will cause process complexity.

US7,672,549B2 discloses using the waveguide characteristics of optical materials to control the light path and guide the incident light to the solar cell. However, in this patent, making the waveguide material into different shapes or adding reflectors to change the light path will also cause process complexity.

US7,940,457B2 discloses that windows made of optical materials are combined with solar concentrators to make smart energy-saving windows. Flexible Waveguide Components

[0008] Therefore, it is necessary to increase the cost of materials used in the existing solar cell modules, the reduction of the overall power generation efficiency due to shading, the need to use optical adhesives or jigs to fix the substrate and solar cells or complicated installation operations, etc. The process steps and manufacturing cost make the economic benefit poor, and the plasticity of the optical materials used will also limit the shape of the solar cell module

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