Anti-Reflective Coating With High Optical Absorption Layer For Backside Contact Solar Cells

A backside contact solar cell comprising:

• a textured surface on a front side silicon substrate of the backside contact solar cell, the front side facing the sun during normal operation to collect solar radiation;
• a passivation level formed on the textured surface;
• a high optical absorption layer formed on the passivation level, the high optical absorption layer being configured to block at least 10% of UV radiation coming into the silicon substrate from the front side;
• and
• a low optical absorption layer formed on the high optical absorption layer.

A method of fabricating a backside contact solar cell, the method comprising:

• texturing a surface of a front side of a solar cell substrate of the backside contact solar cell to create a textured front side surface, the front side facing the sun during normal operation to collect solar radiation;
• forming a passivation level over the textured front side surface;
• forming a high optical absorption layer over the passivation level, the high optical absorption layer being configured to block at least 10% of UV radiation coming into the substrate from the front side;
• and
• forming a low optical absorption layer over the high optical absorption layer.

A backside contact solar cell comprising:

• a passivation level formed on a front side of a substrate of a backside contact solar cell;
• a high optical absorption layer formed on the passivation level, the high optical absorption layer being configured to block UV radiation coming into the substrate from the front side;
• and
• a low optical absorption layer formed on the high optical absorption layer and forming a multi-layer anti-reflection structure with the high optical absorption layer and the passivation level.