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