Electrical and optical characterization of crystalline-si solar cell with down shifting eu-doped silicate phosphors film depending on the coverage of phosphors particles using spin-on film process

Electrical and optical performance of crystalline silicon solar cells with down shifting Eu-doped silicate phosphors film using spin-on film technique was experimental demonstrated. The coverage of phosphors particles was controlled using the deposition holding time by spin-on process. Photo-luminescence (PL) and external quantum efficiency (EQE) response of the cells with Eu-doped silicate phosphors are used to examine the effectiveness of the phosphors down shifting. An impressive enhanced in conversion efficiency of 19.7% was obtained when the cell with a 5 wt% Eu-doped silicate phosphors mixing with SiO₂ solution for a 5 s deposition holding time.