Nickel-doped titanium dioxide-based perovskite solar battery and preparation method thereof

Abstract

The invention belongs to the related technical field of micro-nano fabrication, and discloses a preparation method of a nickel-doped titanium dioxide-based perovskite solar battery. The preparation method comprises the following steps of (1) performing cleaning treatment on a conductive substrate; (2) depositing a rutile-phase nickel-doped titanium dioxide thin film on the conductive substrate byadopting a water bath method to form a photo anode at the annealing temperature of 450-500 DEG C; (3) performing spin coating on the surface of the photo anode with a perovskite precursor solution, and performing heating treatment to obtain a light absorption layer; (4) evaporating a layer of copper phthalocyanine on the surface of the light absorption layer to form a hole transport layer; and (5)performing silk-screen printing on commercial carbon paste to realize film forming to form a carbon counter electrode layer on the hole transport layer and finishing preparation. The invention also relates to the nickel-doped titanium dioxide-based perovskite solar battery. By virtue of the preparation method, the production cost is lowered, battery performance and stability are greatly improved,and large-scale commercial production of the battery is facilitated.

Description

Technical field [0001] The invention belongs to the technical field related to micro-nano manufacturing, and more specifically, relates to a perovskite solar cell based on nickel-doped titanium dioxide and a preparation method thereof. Background technique [0002] Energy is one of the three basic resources for human survival and social development. The most used energy in modern society is still fossil energy. On the one hand, traditional fossil fuels are exhausted; on the other hand, the burning of fossil fuels poses a serious threat to environmental pollution. This human living environment. As a clean and sustainable new energy source, solar energy will occupy the most important position in the future energy structure. Therefore, the research and application of solar energy technology is increasingly widespread. [0003] After long-term research and development, solar cells have experienced the first generation of crystalline silicon-based solar cells, the second generation of ...

AI Technical Summary

Problems solved by technology

However, pure TiO 2 The thin film has the disadvantages of low electrical conductivity and high density of defect states, and the TiO 2 Doping treatment can effectively improve these defects, compared with the traditional high-temperature sintering preparation of TiO 2 Photoanode, TiO prepared by some low-temperature preparation processes such as low-temperature CBD process 2 There is a disadvantage of low crystallinity, and TiO based on low temperature preparation 2 The battery has disadvantages such as low fill factor, poor low-light performance, and large hysteresis

[0006] In addition, the most widely used organic hole transport materials at this stage, such as spiro-OMeTAD, PTAA, etc., have expensive structures and poor charge transport performance, and the organic additives used to improve their performance are easily oxidized in air, which further reduces the battery stability

The counter electrode is usually prepared by thermally evaporating noble metal gold or silver, which consumes a lot of energy, and thermal evaporation often requires a high degree of vacuum. Coupled with the consumption of noble metals, the cost of battery preparation is high, which is not conducive to the large-scale preparation of batteries. The industrialization of batteries has brought difficulties

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