| abstract |
The invention provides a perovskite material and its application in solar cells and a preparation method of solar cells, the steps are as follows: methyl ammonium iodide, lead iodide, tin iodide and copper bromide or methyl ammonium iodide The precursor materials of lead iodide and copper bromide are dissolved in a mixed solvent of γ-butyrolactone and dimethyl sulfoxide to make a perovskite solution; TiO 2 prepared at low temperature is used as the cathode transport layer; the ternary lead A tin-copper perovskite solution was processed onto the cathode transport layer, followed by 2,2',7,7'‑tetrakis[N,N‑bis(4‑methoxyphenyl)amino]‑9,9'‑spiro Difluorene is processed on the junction photosensitive layer to obtain a hole transport layer; then an anode electrode is deposited to obtain an efficient and environmentally friendly perovskite solar cell. The perovskite type solar cell obtained by the invention has high energy conversion efficiency, is environmentally friendly, has a simple process, and has good properties of perovskite crystals. |