| abstract |
The invention provides a laminated solar cell and a preparation method thereof. The solar cell includes a stacked TOPCon cell and a perovskite solar cell; the TOPCon cell includes a silicon wafer layer, and one of the silicon wafer layers A diffusion silicon layer and a passivation layer are stacked on the side surface, and a tunneling layer and a polysilicon layer are stacked on the other side surface of the silicon wafer layer; the surface of the polysilicon layer far away from the tunneling layer and the perovskite solar The battery is attached on the side away from the electrodes. In the invention, the TOPCon battery is inverted as the bottom battery, and the perovskite solar battery is grown on the back of the TOPCon battery, which has the characteristics of simple structure, convenient preparation, low cost and high photoelectric photoelectric conversion efficiency. |