I-solar monocrystalline silicon enezinhlangothi ezimbili ze-PERC module iyimodyuli yelanga eyenziwe nge-monocrystalline silicon impahla, enekhono lokuguqulwa kwesithombe sikagesi esinezinhlangothi ezimbili.I-PERC isifinyezo se- “rear side Verick effect”, okuwubuchwepheshe bamaseli angemuva asobala, angathuthukisa ukuphuma kwamandla amamojula weseli yelanga.