Potential and limitations of a-Si, S : H alloys as a candidate for solar cell applications

Abstract EN

During the last two decades hydrogenated amorphous silicon thin fames emerged as a main candidate for low cost solar cells material.

It was shown that addition of sulfur to the silicon matrix enhances appreciably the stability of the material and improves its optoelectronics properties.

However, incorporation of high amount of sulfur increases the defect density and may have damaging effect on the bonding structure and stability of the material, and thus leading to inferior optoelectronic quality of the thin film.

In this work we have prepared hydrogenated amorphous silicon-sulfur alloys thin films by glow discharge deposition of Sill4 and H2S gases diluted with helium.

The preparation parameters that provide the most stable and optimum optoelectronic properties of the material were investigated.