Sprayed and Spin-Coated Multilayer Antireflection Coating Films for Nonvacuum Processed Crystalline Silicon Solar Cells


Creative Commons License

Uzum A., Kuriyama M., KANDA H., KIMURA Y., TANIMOTO K., FUKUI H., ...More

INTERNATIONAL JOURNAL OF PHOTOENERGY, 2017 (SCI-Expanded) identifier identifier

Abstract

Using the simple and cost-effective methods, spin-coated ZrO2-polymer composite/spray-deposited TiO2-compact multilayer antireflection coating film was introduced. With a single TiO2-compact film on the surface of a crystalline silicon wafer, 5.3% average reflectance (the reflectance average between the wavelengths of 300nm and 1100 nm) was observed. Reflectance decreased further down to 3.3% after forming spin-coated ZrO2 on the spray-deposited TiO2-compact film. Silicon solar cells were fabricated using CZ-Si p-type wafers in three sets: (1) without antireflection coating (ARC) layer, (2) with TiO2-compact ARC film, and (3) with ZrO2-polymer composite/TiO2-compact multilayer ARC film. Conversion efficiency of the cells improved by a factor of 0.8% (from 15.19% to 15.88%) owing to themultilayer ARC. J(sc) was improved further by 2mA cm(-2) (from 35.3 mA cm(-2) to 37.2 mA cm(-2)) when compared with a single TiO2-compact ARC.