Low cost high-efficiency amorphous silicon solar cells with improved light-soaking stability

► ICP CVD thin-film solar cells have low defect density and high conversion efficiency. ► The carrier transport is mainly limited by the carrier-trapping defects near the band edges. ► The Si framework of ICP CVD films is stable and can endure prolonged light soaking. ► Light soaking reduces the optical transition moments and increases the emission rate of tapped electrons.