Heat flow regulation and control photoelectric device and preparation method thereof

The invention discloses a heat flow regulation and control photoelectric device and a preparation method thereof, and belongs to the technical field of solar cell preparation. According to the heat flow regulation and control photoelectric device disclosed by the invention, the normal-temperature phase change heat storage layer is added in the packaging structure on the surface of the perovskite solar cell, and the normal-temperature phase change heat storage layer is of a composite structure composed of the heat storage material and the heat conduction material, so that phase change and decomposition of the perovskite light absorption layer caused by too high temperature of the device can be avoided; the stored heat is gradually released at night, so that the interface stress concentration caused by overlarge temperature change of the battery is avoided, the interlayer separation in the battery is inhibited, and the defect that the thermal stability of a device cannot be improved by a current packaging strat