Significant Efficiency Enhancement in Ultrathin CZTS Solar Cells by Combining Al Plasmonic Nanostructures Array and Antireflective Coatings

摘要: In the few past years, economic and eco-friendly Cu2ZnSnS4 (CZTS) solar cells have caught lots of attentions. However, due to rather poor efficiency, identifying deficiencies making improvements is necessary. present study, performance improvement ultrathin CZTS was achieved through (1) incorporation anti-reflective coating (ARC) on surface cell (2) embedding Al plasmonic nanostructures with different radius, periods, vertical positions in absorber layer. Various thicknesses layer were simulated optically electrically using FDTD DEVICE solver Lumerical software. The reference consists a 1.5-nm-thick exhibit an efficiency up 5.67%, short-circuit current density (Jsc) 18.48 mA cm−2 open circuit voltage 0.58 V. Result showed remarkable enhancement spite very thin For 500-μm-thick assistance ARC nanostructures, increased 7.45% increase Jsc 22.62 mA cm−2 0.62 V.