Several　valuable　scientific　investigations　have　been　conducted　these　last　few　years　in　materials　design　and　device　engineering　for　perovskite　solar　cells　(PSCs)　to　make　them　competitive　compared　to　traditional　silicon-based　photovoltaic　technologies.　Consequently,　high　power　conversion　efficiency　beyond　25%　is　nowadays　reported.　However,　their　long-term　stability　remains　a　significant　challenge　to　overcome.　Herein,　the　influence　of　fluorinated　compounds　on　each　layer　of　PSCs　devices　and　their　impact　on　the　resulted　device　performances　and　stability　is　spotlighted.　The　fluorinated　compounds　exhibit　attractive　properties　due　to　their　very　high　electronegativity　attributed　to　the　fluorine　atom,　and　their　strong　hydrophobicity.　Thus,　the　introduction　of　these　compounds　is　found　to　be　a　successful　strategy　to　positively　suppress　the　surface　trap　states,　enhancing　charge　collection　and　reducing　interfacial　charge　recombination.　Besides,　a　better　film　quality　and　better　energy　level　alignment　is　obtained,　resulting　in　the　improvement　of　device　photovoltaic　parameters　such　as　the　open-circuit　voltage　(Voc　),　short-circuit　current　(Jsc　),　and　fill　factor　(FF),　and　then,　the　device＇s　overall　power　conversion　efficiency　(PCE).　Their　long-term　stability　is　also　found　to　further　be　improved.