Assembling method for improving light current of perovskite solar cell by using CuTe nanocrystals

The invention relates to the technical field of perovskite solar cells, in particular to an assembling method for applying non-noble metal CuTe nanocrystalline with a wide surface plasma resonance absorption peak to a perovskite solar cell. Compared with a commercial silicon solar cell, an organic-inorganic hybrid perovskite material has a narrow optical band gap, the spectral response range is in a range of 300-780 nm, and most sunlight in a near-infrared region is not effectively utilized, so that the photoelectric conversion efficiency of the organic-inorganic hybrid perovskite material is low. The invention designs an assembling method for broadening the spectral response range of an organic-inorganic hybrid (CH3NH3PbI3) perovskite solar cell by using a non-noble metal CuTe nanocrystal so as to improve the light current and the photoelectric conversion efficiency of the perovskite solar cell. The method is beneficial to absorption of near-infrared light, widens the spectral response range, improves the ut