Through changing the refractive index and thickness of the interlayer,the influence of the interlayer on the electrical properties of a-Si/uc-Si tandem solar cells is investigated.Based on the problem of current matching top cell and bottom cell in tandem solar cells,the corresponding solution is provided.The results indicate that the refractive index of the interlayer materials should be less than 3.1.The refractive index and thickness are correlated in the case of current matching between top ...