Method for manufacturing porous polysiloxane film, porous polysiloxane film manufactured thereby, and solar cell module comprising same

Patent metadata

Field	Value
Publication number	US-12396291-B2
Application number	US-201917312652-A
Country	US
Kind code	B2
Filing date	Aug 2, 2019
Priority date	Dec 11, 2018
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

The purpose of the present invention is to provide a method for manufacturing a solar cell module, comprising the steps of: placing a mixture solution comprising a polysiloxane and a curing agent in a humidified condition and sealing same; forming a polysiloxane film by curing the mixture solution; and manufacturing a porous polysiloxane film by evaporating water drops formed on the surface of the polysiloxane film. By applying the porous polysiloxane film manufactured by the present invention to a solar cell module, weight reduction and efficiency improvement effects of the solar cell module can be obtained.

First claim

The invention claimed is:

1. A solar cell module comprising:
a rear protective layer;
an encapsulant;
a solar cell; and
a porous polysiloxane film for antireflection,
wherein the porous polysiloxane film is manufactured by a method comprising
disposing and sealing a mixed solution including liquid polydimethylsiloxane and a curing agent in a humidified environment;
curing the mixed solution to form a polysiloxane film; and
evaporating water droplets formed on a surface of the polysiloxane film,

wherein the porous polysiloxane film has 3.5×10 6 to 1.0×10 7 pores per unit area (cm 2 ) in a surface portion, and an average diameter of the pores is 10 to 15 μm,
wherein the mixed solution further comprises 15 to 200 nL of a dye for 1 g of liquid polydimethylsiloxane, and
wherein the porous polysiloxane film has a color.

2. The solar cell module of claim 1 , wherein the mixed solution is a mixture of the liquid polydimethylsiloxane and the curing agent in a weight ratio of 1:1 to 1:2.

3. The solar cell module of claim 1 , further comprising vacuum degassing to remove air bubbles from the mixed solution.

4. The solar cell module of claim 1 , wherein the porous polysiloxane film has a transmittance of 95 to 99%.

5. The solar cell module of claim 1 , wherein the porous polysiloxane film has a haze value of 20 to 50%.

Assignees

• Posco
• Res Inst Ind Science & Tech
• Posco Co Ltd

Inventors

• Tark Sung-Ju
• Mok Im-Soo
• Park Ji-Sang
• Baek Kun-Hoon
• Kim A-Rong

Classifications

• H10F71/00

  Manufacture or treatment of devices covered by this subclass (patterning processes to connect thin photovoltaic cells in integrated devices, or assemblies of multiple devices, having photovoltaic cells H10F19/33; manufacture or treatment of encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells H10F19/80; manufacture or treatment of integrated devices, or assemblies of multiple devices, comprising at least one element in which radiation controls the flow of current H10F39/00) · CPC title

• C08J2383/04

  Polysiloxanes · CPC title

• C08J2201/0504

  the liquid phase being aqueous · CPC title

• C08J9/28 Primary

  by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title