Front sheet of solar cell, method of manufacturing the same and photovoltaic module comprising the same

摘要

A front sheet of solar cell, a method of manufacturing the same and a photovoltaic module are provided. The front sheet of solar cell can effectively block infrared rays (IRs) by forming an IR blocking layer including a cholesteric liquid crystal (CLC) material on a substrate. Thus, an increase in temperature of a cell can be suppressed so that the power generation efficiency of the cell can be improved. Also, the multi-layered sheet can be configured so that a UV blocking layer including a fluorine-based polymer and a wavelength conversion material can be formed on the IR blocking layer. Thus, wavelengths of a UV region can be converted into wavelengths of a VR region so that the power generation efficiency of the cell can be improved, and discoloration and deformation caused by UVs can be prevented so that the weather resistance can be improved.

主权项

1. A front sheet of a solar cell comprising:
a substrate; an infrared ray (IR) blocking layer formed on one surface of the substrate and including a cholesteric liquid crystal (CLC) material; and an ultraviolet ray (UV) blocking layer formed on the IR blocking layer and including a fluorine-based polymer and a wavelength conversion material, wherein the wavelength conversion material converts light in the UV region into light in the visible region, and wherein the IR blocking layer blocks IRs having a wavelength of 1,000 nm to 2,650 nm, wherein the CLC material comprises 98 parts by weight to 99 parts by weight of the nematic liquid crystal compound; and 1 part by weight to 2 parts by weight of the chiral compound; and wherein the CLC material selectively reflects light having a selective reflection center wavelength of 1,000 nm to 2,650 nm.