Antireflection Enhancement of Solar Cell Structure Based on Multi-type of Nanoparticles

In this study, the triple layers of anti-reflection coating (TLARC) structure consists of, the effective medium which consists of three types of metal nano particles (gold , silver , Aluminum) , Titanium dioxide and Zinc sulfide respectively. These three layers are sandwiched between cover (glass) and substrate (silicon) in order to get our structure molding of solar cell which consists of five layers.

The reflection, transmission and absorption coefficients in both modes transvers electric (TE) and transvers magmatic (TM) are derived by using transfer matrix method (TMM). Maple program has been used to solve equations and plot the curves which describe the behavior of reflectance, transmittance and absorbance versus incident wavelength.

Analytic model of TLARC was created to optimize the efficiency of the solar cell. By chosen the suitable refractive index of materials and thickness of the layers in order to achieve minimum reflectance and maximum transmittance. The obtained results show that the metal nanoparticles can be used to improve the efficiency of solar cell where the transmittance of the structure achieves about 100% and the reflectance is about to be zero. However, the transvers magnetic (TM) mode has transmittance higher than the transvers electric (TE) mode due to plasmonic resonance.