Solar monocrystalline silicon PERC module mai gefe biyu shine tsarin hasken rana wanda aka yi da kayan silicon monocrystalline, wanda ke da ikon juyawa hoto mai fuska biyu.PERC ita ce taƙaitawar "sakamakon gefen baya na Verrick", wanda shine fasaha na sel masu gaskiya na baya, wanda zai iya inganta ƙarfin wutar lantarki na ƙwayoyin rana.