SOLAR CELL

摘要

In a conventional solar cell, it has been difficult to ensure a sufficient light absorption and simultaneously to prevent current loss due to the reduction of the moving distances of electrons and holes. As a means for solving this difficulty, a plurality of p-i-n junctions are stacked through an insulating film and are connected in parallel with each other using through-electrodes. In this case, the through-electrodes and the p-i-n junctions are connected through the p-layer or the n-layer, thereby moving electrons and holes in opposite directions and generating output current. In addition, the i-layer is made thicker than the p-layer and the n-layer in each of the p-i-n junctions, thereby ensuring a sufficient light absorption and simultaneously preventing current loss.