Perovskite solar cell with improved metal electrode and preparation method thereof

Abstract

The invention discloses a perovskite solar cell with an improved metal electrode and a preparation method of the perovskite solar cell, and belongs to the technical field of solar cell devices. Firstly, a transparent electrode layer is prepared on a high-transmittance glass layer, an electron transport layer is prepared on the transparent electrode layer, a perovskite active layer is prepared on the electron transport layer, a hole transport layer is prepared on the perovskite active layer, and a perovskite battery main body is obtained; patternable batch preparation is carried out on a backboard substrate by adopting a physical deposition method, cutting is carried out according to the shape and the circuit of a perovskite cell main body part after deposition is completed to obtain a metal electrode layer, and a barrier layer is prepared on the metal electrode layer to obtain an electrode main body; and the perovskite cell main body part and the electrode main body are aligned and superposed, heat treatment is carried out, and then cooling is performed slowly to reach a room temperature to obtain the perovskite solar cell with the improved metal electrode. And on the premise of obtaining the high-performance solar cell, the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of solar cell devices, and relates to a perovskite solar cell with an improved metal electrode and a preparation method thereof. Background technique [0002] Perovskite solar cells (perovskite solar cells) are solar cells that use perovskite-type organic metal halide semiconductors as light-absorbing materials. They belong to the third generation of solar cells and are also called new concept solar cells. When exposed to sunlight, the perovskite layer first absorbs photons to generate electron-hole pairs. Due to the difference in the binding energy of excitons in perovskite materials, these carriers either become free carriers or form excitons. Moreover, because these perovskite materials tend to have lower carrier recombination probability and higher carrier mobility, the diffusion distance and lifetime of carriers are longer. Then, these unrecombined electrons and holes are collected by the electron tra...

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Problems solved by technology

[0003] The metal back electrode in traditional perovskite cells is usually deposited separately for each cell. In the final stage of perovskite cell preparation, evaporation / sputtering is used for deposition, and the production efficiency is low.

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