| abstract |
The invention provides a preparation method of a novel lead-free perovskite solar cell device, which belongs to the field of solar cells. In the present invention, a non-toxic perovskite solar film absorption layer is prepared by a step-by-step vapor deposition method, and AgCl material with weak photosensitivity is used to prepare the perovskite film, and finally a new type of Ag 2 BiI 3 Cl 2 perovskite is successfully prepared for the first time. It can effectively solve the problem of low quality of the double perovskite solar cell absorber film prepared by the existing solution method, and the Ag 2 BiI 3 Cl 2 new type of perovskite film prepared by the invention is applied in solar cell devices. , the best photoelectric conversion efficiency of 0.76% is obtained. At the same time, the overall preparation process conforms to the environment-friendly development concept, which is beneficial to the industrialization development of perovskite solar cells. |