Heterojunction solar cells formed by two-dimensional materials and crystalline silicon are one of the research highlights in the field of solar cells. Most researches focus on the graphene-silicon Schottky junction solar cells. To refine the band-gap structure of these devices, we have fabricated the two-dimensional semiconductor material of n-MoS₂, which has a band-gap, on the surface of p-Si to form heterojunction solar cells. Our experiment has revealed the effect of annealing time on the synthesis of MoS₂. Dark and light current-voltage curves of MoS₂-Si heterojunction are measured and discussed. The heterostructure simulation software wx-AMPS is applied for the efficiency calculation and the energy band analysis. The effects of MoS₂ thin film thickness and carrier concentration on the open-circuit voltage are studied.

two-dimension material  /  molybdenum disnlfide  /  solar cell  /  heterojunction  /  J-V character