Halide based perovskite solar cells (PSCs) have recently shown rapidly rising power conversion efficiencies up to 25.2 % [1], but there are a number of opportunities to improve their photovoltaic parameters. For example, the open current voltage (VOC) maximum of thin film cells cannot be achieved without additional photonic nanostructures, while the optimization of main SC parameters strongly depended from the transport properties of each cell layer and could be received by inclusion of nanostructures. Therefore, we employ Phosphorus doped Silicon nanoparticles (n-Si NPs) for light trapping enhancement and improved charge transfer between meso-TiO2 and MAPbI3 layers of PSCs. We show the efficiency growth from 17.6 to 18.2% via the improvement of VOC. The proposed method for preparing upgraded PSCs is cheap and can be simply implemented to the technological process.

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