THIN FILM SOLAR CELL BACKSIDE CONTACT

摘要

Embodiments relate to a thin film solar cell backside contact. A planar substrate is provided and an associated backside of the substrate is modified to form one or more pedestals. The modified substrate is layered with multiple layers of material, including a conducting layer, a reflective layer, and a passivation layer. The layered backside substrate is polished to expose portions of the conducting layer at discrete locations on the backside of the substrate. The exposed portions of the conducting layer maintain direct electrical communication between an absorber layer deposited on the layered backside substrate and the conducting layer.

主权项

1. A thin film solar cell, the cell comprising:
a layered, backside contact comprising an embossed substrate, a conducting layer, a reflective layer, and a passivation layer, the contact polished to expose portions of the conducting layer at the surface of the contact; an absorber layer in communication with polished contact; a buffer layer in communication with the absorber layer; a transparent layer in communication with the buffer layer; a contact grid in communication with the transparent layer; and an anti-reflective coating in communication with the contact grid and the first transparent layer.