Encapsulant material, crystalline silicon photovoltaic module and thin film photovoltaic module

A crystalline silicon photovoltaic module, comprising a first backsheet, a first encapsulant layer, a plurality of crystalline silicon solar cells, and a transparent substrate sequentially stacked, characterized in that the crystalline silicon photovoltaic module further comprising:

• a foamed encapsulant material with porous structure disposed between the crystalline silicon solar cells and between the first encapsulant layer and the transparent substrate, wherein
• the foamed encapsulant material with porous structure is crosslinked using a chemical or physical crosslinking method, so as to enhance heat resistance of the foamed encapsulant material with porous structure, and
• a material of the foamed encapsulant material with porous structure comprises ethylene vinyl acetate, polyvinyl butyral, polyolefin, polyurethane or silicone, so as to collect light passing through a gap between the crystalline silicon solar cells and to increase power conversion efficiency of the crystalline silicon photovoltaic module.