Method for preparing passivation layer of perovskite solar cell

The invention relates to the technical field of solar cells, in particular to a preparation method of a perovskite solar cell passivation layer, which comprises the following steps of: 1, preparing a transparent electrode layer; step 2, preparing an electron transport layer; step 3, setting a passivation layer; step 4, setting a perovskite absorption layer; and step 5, performing heat treatment on the perovskite absorption layer. By heating the passivation layer and cooling the perovskite absorption layer on the opposite side of the passivation layer, cations in the passivation layer are promoted to diffuse into the perovskite absorption layer, the grain boundary in the perovskite absorption layer is passivated, the photoelectric conversion efficiency and stability of the perovskite solar cell are improved, and the perovskite solar cell has a good application prospect in the technical field of solar cells. 本发明涉及太阳电池技术领域，具体涉及一种钙钛矿太阳电池钝化层的制备方法，包括如下步骤：步骤1、制备透明电极层；步骤2、制备电子传输层；步骤3、设置钝化层；步骤4、设置钙钛矿吸收层；步骤5、热处理钙钛矿吸收层。