An Extended Approach on Power Conversion Efficiency Enhancement Through Deposition of ZnS-Al2S3Blends on Silicon Solar Cells

Transparent zinc sulfide (ZnS)-aluminium sulfide (Al2S3) composite thin-films are deposited on silicon solar cells through radio frequency (RF) sputtering method at room temperature to investigate the structural, optical, electrical, and thermal characteristics. X-ray diffraction analysis reveals the presence of the powder sample (ZnS-Al2S3) and its average crystallite size is 15.83 nm. The minimum electrical resistivity (rho), maximum hall mobility (mu), and carrier concentration (N) of ZnS-Al(2)S(3)nano-layer coated solar cells are measured to be 2.98 x 10(-3) ohm cm, 14.89 cm(2) V-1 s(-1)and 24.88 x 10(20) cm(-3)respectively. For a time period of 25 min, ZnS-Al(2)S(3)nano-layer sputter coating produces the maximum power conversion efficiencies (PCE) of 19.38% and 21%, obtained at open and controlled atmospheric conditions, respectively. The influence of operating temperature at both these open and controlled atmospheric conditions for ZnS-Al(2)S(3)nano-layer coated silicon solar cells is observed. The ZnS-Al(2)S(3)composite demonstrates the properties of a desirable anti-reflection coating material for enhancing the PCE of solar cells.