INVERTED THICK 2D HYBRID PEROVSKITE SOLAR CELL INSENSITIVE TO FILM THICKNESS AND METHOD FOR PREPARING THE SAME

摘要

Provided are an inverted thick 2D hybrid perovskite solar cell insensitive to film thickness and a preparation method thereof, belonging to the field of organic-inorganic hybrid perovskite materials. The solar cell adopts a 2D hybrid perovskite thick-film material as a light absorption layer having thickness in a range of 500-800 nm, which is conducive to the full absorption of sunlight. The thick-film film material can be deposited from a precursor solution added with guanidine hydroiodide, and is composed of large grains growing along the thickness direction. The solar cell with an inverted structure prepared by using the thick-film material as a light absorption layer has an efficiency fluctuation less than 5% in a film thickness range of 500-800 nm. This is of great value for the preparation of high-performance hybrid perovskite solar cells by a large-area solution method.