Study of Top Triangular Nano-Grating on Solar Cell Using Rigorous Coupled Wave Analysis

Abstract

This paper presents the simulation results of top nano-grating on solar cell using rigorous coupled wave analysis (RCWA) method. However, compared to other simulation results, we calculated weighted total transmission of solar cell according to Sun spectrum and Silicon photo detector responsivity. Our optimization shows that the top grating with period 200nm, width 40nm, and height 150nm is the optimization structure. This case has 0.45544 total weighted transmission powers and is about 70.9% improvement compared to the non-grating case.

Needle Profile Grating Structure for Absorption Enhancement in GaAs Thin Film Solar Cells

“…The GaAs needle profile (NP) grating structure has been used to heighten the light scattering effect to improve absorption efficiency [6,7]. Based on nanoimprint lithography [8] and a wet chemical etching process [9], smooth line edges and a triangle-shaped grating profile have been fabricated.…”