2 results about "Inorganic lead" patented technology

The invention provides a solar cell, a preparation method and a perovskite layer structure, and can be widely applied to the technical field of cells. A tunneling transparent conductive oxide layer deposited on the bottom cell; the hole transport layer is deposited on the tunneling transparent conductive oxide layer; the perovskite layer is deposited on the hole transport layer and is prepared based on an all-inorganic lead-free perovskite material, a second site of the all-inorganic lead-free perovskite material comprises tin ions, and the all-inorganic lead-free perovskite material comprises an antioxidant; the electron transport layer is deposited on the perovskite layer; and the metal electrode layer is deposited on the electron transport layer to form a complete structure of the solar cell. According to the invention, the toxicity problem of the lead-based perovskite material in the related technology is relieved, the stability of the perovskite layer is improved, and the photoelectric performance and reliability of the solar cell are further improved.

The invention discloses a preparation method of a chemical vapor deposition full-inorganic lead halide perovskite thin film. The method comprises the following steps: fixing a substrate in a low-temperature area of a high-temperature tube furnace; preparing a mixed precursor composed of cesium halide, lead halide and tin halide powder; placing the prepared mixed precursor in a heating constant-temperature area in the middle of a tubular furnace; introducing inert gas to form one-way airflow in the tubular furnace; and heating the mixed precursor in the tubular furnace, and reacting for a period of time to obtain the full-inorganic lead halide perovskite thin film. The thickness of the all-inorganic lead halide perovskite thin film can be effectively regulated and controlled by controlling the relative molar ratio of tin halide to lead halide, and the structural defect density in the thin film is effectively reduced, so that the stability of the all-inorganic lead halide perovskite thin film is effectively improved.