DIAMOND-LIKE CARBON BASED ANTI-REFLECTIVE COATINGS FOR SILICONE SOLAR BATTERIES

Abstract

In this paper, when modeling the reflection coefficient based on FDTD simulation, the optimal values for the thicknesses of the porous silicon and diamond-like carbon layers of a two-layer antireflection coating (PS/DLC) were determined. Encouraging results were obtained with the following layer parameters: n(DLC) = 2.4, d(DLC) = 50 nm; and n(PS) = 2.2, d(PS) = 100 nm. Reflection in the range of 530–560 nm was about 0.5%, and the reflection minimum is located in the region of about 535 nm. In general, in the visible range of 400-700 nm, the reflection does not exceed 2.5%. It has been clearly shown that it is possible to significantly reduce reflection (on 34.5%) in the visible range, thereby increasing the efficiency of solar cells.