Pyramidal structures are suitable only for monocrystalline solar cell and these textured surfaces can also be suitable for strong absorbing materials. These reduce the thickness of solar cell and also reduce the bulk recombination and improve the photon absorption and increase the conversion efficiency [42], [43] and [44]. On the textured surface, light is reflected in a proper fashion and this could increase the light path in the material up to 4n2 (where n is the index of refraction for the semiconductor) with textured interface on both sides of cell [45].
A 0.3% absolute efficiency boost was demonstrated using laser texturing on multicrystalline silicon compared to standard isotexture, with the laser-textured cells averaging just over 17% efficiency [46].