Cathode modified plane perovskite solar energy cell and preparation method thereof

Abstract

The invention discloses a cathode modified plane perovskite solar energy cell and a preparation method thereof; the cathode modified plane perovskite solar energy cell comprises a conductive substrate, a cavity transfer layer, a perovskite layer, an electron transfer layer, a cathode modification layer and a metal counter electrode arranged from bottom to top in order; the cathode modification layer is made of acetylacetone titanium oxide (TOPD) material, and is arranged so as to reduce contact barriers between an cathode metal electrode and the electron transfer layer in certain level, thus reducing series resistances, greatly improving fill factor and current density, and effectively improving the energy conversion efficiency; on the other hand, compared with a method using a thermal evaporation inorganic cathode interface modification layer, the cathode modified plane perovskite solar energy cell preparation method can greatly simplify the production technology, thus reducing the preparation cost. The method employs the low temperature preparation technology in the whole process, thus providing a new path and reliability for the commercialization of the efficient flexible perovskite solar energy cells.

Description

technical field [0001] The invention belongs to the field of planar perovskite solar cells, in particular to an alcohol solution cathode interface modified planar perovskite solar cell and a preparation method thereof. Background technique [0002] With the depletion of fossil fuels, the development of clean energy is an inevitable means for human beings to achieve sustainable development. Solar cells provide inexhaustible clean energy by converting a steady stream of solar energy into electrical energy, which is an important countermeasure for sustainable development. [0003] At present, the commercialized batteries are mainly silicon solar cells and their compound solar cells. The high cost of materials and preparation restricts its development. Therefore, new solar cells with low cost and simple preparation process have become the focus of competing research in various countries. . In particular, the cost of perovskite solar cells is low and the preparation process is ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are two main structures of perovskite solar cells. One is n-i-p type perovskite solar cells based on inorganic semiconductor oxides as photoanodes. The preparation process of this cell structure usually requires high-temperature annealing process. The polymer semiconductor hole transport layer is a p-i-n row perovskite solar cell with a photoanode. The structure and preparation process are simple and can be prepared at low temperature, which opens up the way for the development of flexible solar cells, but the performance of this type of device is relatively low.

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