Heat treatment method of perovskite thin film and method for preparing solar cell based on technology

Disclosed is a heat treatment method of a perovskite thin film. The heat treatment method is characterized in that a microwave is adopted to perform heat treatment on the perovskite thin film, the microwave adopts a mixed-mode mode, the frequency is 2.45GHz, microwave power is 80-640w, and processing time is 2.5-15min. The invention provides a brand-new heating technology to prepare the perovskite thin film, a microwave heating method is adopted to prepare the perovskite thin film, the problems of long consumed time, the low energy usage rate and insufficient contact heating of a traditional heating plate and furnace chamber heating method are effectively solved, heating time can be greatly shortened, non-contact heating is adopted, the energy usage rate can also be effectively improved, an influence of environment humidity on the perovskite thin film is reduced, and performance of a perovskite solar cell prepared on the basis of the technology is approximate to performance of a solar cell prepared by a traditional heating mode.