Photovoltaic cell module

A photovoltaic cell module comprising:

• an upper substrate;
• a lower substrate;
• and
• a photovoltaic cell or a photovoltaic cell array;
• and
• an encapsulant between the upper substrate and the lower substrate, the encapsulant comprising a first layer comprising an aryl group-containing silicone resin and a second layer comprising an aryl group-containing silicone resin and a light scattering particle that is uniformly dispersed in the second layer,
• wherein the aryl group-containing silicone resin comprised in the first layer satisfies a condition of General Formula 1:
• X≧0.15 [General Formula 1]
• wherein, X represents an average molar ratio (aryl groups/silicon atoms) of the aryl groups in the aryl group-containing silicone resin with respect to the silicon atoms in the aryl group-containing silicone resin,
• wherein the photovoltaic cell or the photovoltaic cell array is encapsulated by the first layer comprising an aryl group-containing silicone,
• wherein the second layer is in direct physical contact with the first layer and not to be in contact with the photovoltaic cell or photovoltaic cell array,
• wherein the aryl group-containing silicone resin comprised in the first layer is a silicone resin represented by an average composition formula of Chemical Formula 1 and comprises a siloxane unit represented by Chemical Formula 2 or Chemical Formula 3:
• (R1R2R3SiO1/2)a(R4R5SiO2/2)b(R6SiO3/2)c(SiO4/2)d [Chemical Formula 1]
• (R7R8SiO2/2) [Chemical Formula 2]
• (R9SiO3/2) [Chemical Formula 3]
• wherein, R1 to R6 are substituents directly bound to a silicon atom and each independently represent hydrogen, an alkyl group, an aryl group, a hydroxy group, an epoxy group, an acryl group, an isocyanate group, an alkoxy group or an alkenyl group;
• at least one or more of R1 to R6 represent an aryl group;
• a is between 0 and 0.6, b is between 0 and 0.8, c is between 0 and 0.8, d is between 0 and 0.4, and a+b+c+d is 1;
• R7 and R8 independently represent an alkyl group or an aryl group;
• R9 represents an aryl group;
• b and c are not 0 simultaneously;
• and at least one of R7 and R8 represents an aryl group.