Light trapping in thin-fim solar cells: From plasmonic to dielectric structures

During the last decade the idea of light-trapping in thin-film solar cells (TFSCs) was compromised by an amount of works which have not resulted in something practical. In this paper we review the basic features of light-trapping structures (LTSs). Since the idea of light trapping due to some resonances and the needed very broad band of this effect contradict one another, we suggest to develop non-resonant all-dielectric LTSs.