A study on increasing the efficiency of the solar cell using nano metals

Abstract

The biggest disadvantage of the solar cell is that the solar cells don't absorb all the light which is incident on them. It captures only the UV portion of the sunlight i.e. only 4-10% of the solar light incident. Therefore to increase the solar energy conversion efficiency the absorption should be extended to visible and IR region also. This is done with the help of depositing nano particles (nano metals) on the silicon surface. Silicon itself is less efficient because its band gap is less so to improve the capture range nano metals are deposited on the silicon substrate by using hot carrier cells and multiple junction solar cell.