different configurations C1 and C2. For the C1 case, light is incident
on the textured surface and for the C2 case, light is incident on the
opposite polished surface. For both configurations, backward and
forward scatterings are measured. The scattering characteristics for
the both samples are shown in Fig. 5(b)
It is clear from Fig. 5(b) that for both configurations, scattering
values are nearly the same with a small peak for the forward
(transmitted) scattering only. As expected this peak is lower for the
case where the light is incident on the polished surface as opposed
to light incident on the textured surface thus confirming the
scattering nature of the ultrafast laser textured surface. It is also
clear from Fig. 5(b) that the angular dependence for ultrafast laser
textured silicon surface is lower than for its annealed counterpart.
Until now we have discussed in detail the optical properties
of light trapping structures for application in silicon solar cells.
Although the discussed textured surfaces provide excellent light
trapping, it is very essential to understand the impact these
surfaces have on the photovoltaics conversion performance.
Therefore, we fabricated silicon solar cells on laser textured