[Back]

N. Bednar, N. Severino, N. Adamovic:
"Optical Simulation of Light Management in CIGS Thin-Film Solar Cells Using Finite Element Method";
Applied Sciences, 5 (2015), 1735 - 1744.

In this paper we present an optical simulation of light management in
Cu(In,Ga)Se2 thin-film solar cells with reduced absorber layer thickness, with the goal of
absorption enhancement in the absorber layer. The light management was achieved by
texturing of the substrate layer, and the conformal growth of all the following layers was
assumed. Two texturing shapes have been explored: triangular and convex, with different
periods and height aspect ratios. The simulations have shown that significant enhancement
of absorption within the absorber layer can be achieved using the proposed geometry.
The results showed that the triangular textures with small periods (100-200 nm) and high
aspect ratios have the most prominent effect on the enhancement of absorption within the
absorber layer, although they are difficult to achieve experimentally.

In this paper we present an optical simulation of light management in
Cu(In,Ga)Se2 thin-film solar cells with reduced absorber layer thickness, with the goal of
absorption enhancement in the absorber layer. The light management was achieved by
texturing of the substrate layer, and the conformal growth of all the following layers was
assumed. Two texturing shapes have been explored: triangular and convex, with different
periods and height aspect ratios. The simulations have shown that significant enhancement
of absorption within the absorber layer can be achieved using the proposed geometry.
The results showed that the triangular textures with small periods (100-200 nm) and high
aspect ratios have the most prominent effect on the enhancement of absorption within the
absorber layer, although they are difficult to achieve experimentally.

light management; CIGS; thin-film solar cells; simulation; finite element method

http://dx.doi.org/10.3390/app5041735