Shape-induced effect on c-Si thin film solar cell efficiency

Nanophotonic light trapping methods play a key role in high thin film solar device. Even many parameters are discussed in cell designs; the shape of the semiconductor grating is rarely included. In this paper, we investigated the shape-induced effects on the absorption of solar cell and demonstrated that even for the structures at the nanometer scale; the shape of the grating is also an indispensable consideration for solar cells.