Abstract
The methylammonium lead tribromide (MAPbBr3) perovskite nanophosphors deposited by spin-on film technique on the textured silicon solar cells with a SiN x anti-reflection coating to enhance photovoltaic performances are demonstrated. The coverage and dimension of MAPbBr 3 particles were 1.6% and 20–50 nm, respectively, determined by SEM images. The luminescent downshifting (LDS) characteristics of MAPbBr3 perovskite nanophosphors were examined by the measurements of photoluminescence (PL), optical reflectance and external quantum efficiency (EQE). The peak of PL signal and photons emitted range are 530 nm and 500–575 nm. LDS effects can be clear displayed on the reflective spectrum and EQE response curve. An increasing in absolute conversion efficiency of 0.54% (from 15.16% to 15.70%) was obtained when the cell with MAPbBr3 nanophosphors layer, compared to the reference cell without MAPbBr3 nanophosphors layer.
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