ABSTRACT
Solar cells are made with junction depths varying from 0.6 to 5.0 µm and can have smooth or rough surfaces. Existing response curves [1] indicate that in order to increase the short wavelength response at a wavelength less than 0.75 µm the junction should be made closer to the surface, while in order to increase the long wavelength response at wavelength greater than 0.75 µm should be made far below the surface. The effect of rough surface is to reduce the life time near the surface, thereby reducing the response to short wavelengths of the sunlight. A theoretical model of the cell shown in Figure 2.1 must be used to describe the mechanism involved in determining the shape of the response curves.
