Effect of conductive layer thickness on light energy capture of thin-film photovoltaic cells

We study the effects of the tunneling evanescent wave, the incident angle and the conductive layer thickness on light energy capture for thin-film polymer solar cells in theory. It is shown that as the thicknesses of conductive layer decrease from 75 nm to 30 nm, the results show that the absorption increases from 58.53% to 67.75% of incoming light at 480 nm and the average optical absorption of the evanescent wave increases from 0.1319% to 0.2083% of incoming light, respectively. The research results indicate that the conducting layer thickness reduction can increase the optical capture of the active layer.