A solar cell having improved electric energy generation efficiency and a method of manufacturing the solar cell. The solar cell includes a substrate (110), a rear electrode layer (120) on the substrate and comprising a first rear electrode (121) and a second rear electrode (122) spaced from each other, a window electrode layer (150) on the rear electrode layer and comprising a first window electrode (151) electrically coupled to the second rear electrode at a contact region (151c) on the second rear electrode, a light-absorbing layer (130) between the rear electrode layer and the window electrode layer, and an insulating layer (160a) on a first portion of the second rear electrode, wherein the first portion is between an edge of the second rear electrode facing the first rear electrode and the contact region.