Effects of Pn junction position depth on output current of solar cell

The effect of position of pn junction on output current for both micro rectangular texturing and planer surface in solar cell has been investigated by ray tracing. This includes in geometric optic modeling and finding the effect of position of pn junction on improving the efficiency. By using ATLAS software show that the position of pn junction is very important when applying texturing to the surface of solar cells. Texturing improves the efficiency but the effectiveness increases with the depth of pn junction. A textured solar cell with 40µm depth of pn junction has the efficiency 3 times more than same non-textured solar cell. Introducing the current variation in 0.25 volts for two surfaces supports this conclusion.