The Effect of Texturing on the Efficiency of a-Si Solar Cell

Texturing of amorphous silicon( a-Si ) solar cell surface by parallel grooves leads to collecting the reflected light from one side of the groove by the other side. In this work a theoretical method is found to calculate the effect of texturing on the efficiency of the(a-Si) solar cells. This is done by finding the change in the photo current due to the increase of light energy trapped due to texturing. Then new I-V are found for groove angles (acute, right and obtuse angles) and for angles of incidence from ( 0 up to 180 ). This is done by finding the solar cell parameters (photo current, total current, short circuit current, open circuit voltage). For small groove acute angels ( 40 as example ) about 100% collection of the incident energy is happened, this in turn increases the efficiency, but this happen within limited angular range. Increasing the groove angles increases the range of maximum absorption but lowers the efficiency