BUFFER LAYER FOR IMPROVING THE PERFORMANCE AND STABILITY OF SURFACE PASSIVATION OF SI SOLAR CELLS

摘要

Embodiments of the present invention generally relate to the fabrication of solar cells and more specifically to a buffer layer for improving the performance and stability of surface passivation of Si solar cells. Generally, a passivation layer stack containing a buffer layer (interlayer) is formed on a surface of the silicon-based substrate. In one embodiment, the passivation layer stack may be formed on the back surface of the substrate. In another embodiment, the passivation layer stack is formed on the back surface of the substrate and a front emitter region (light receiving surface) of the substrate.