Perovskite solar cells based on nickel-doped titanium dioxide and preparation methods thereof

Abstract

The invention belongs to the technical field related to micro-nano manufacturing, and discloses a method for preparing a perovskite solar cell based on nickel-doped titanium dioxide. The method includes the following steps: (1) cleaning the conductive substrate; (2) using a water bath method Depositing a nickel-doped titanium dioxide film of rutile phase on the conductive substrate to form a photoanode, the annealing temperature is 450° C. to 500° C.; (3) spin-coating a perovskite precursor solution on the surface of the photoanode, and performing Heat treatment to obtain the light-absorbing layer; (4) vapor-deposit a layer of copper phthalocyanine on the surface of the light-absorbing layer to form a hole transport layer; A carbon counter electrode layer is formed on the hole transport layer, thus ending. The invention also relates to perovskite solar cells based on nickel-doped titanium dioxide. The invention reduces the production cost, greatly improves the performance and stability of the battery, and is beneficial to the large-scale commercial production of the battery.

Description

technical field [0001] The invention belongs to the technical field related to micro-nano manufacturing, and more specifically relates to a nickel-doped titanium dioxide-based perovskite solar cell 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 environmental pollution caused by the burning of fossil fuels poses a serious threat 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, so the research and application of solar energy technology are becoming more and more extensive. [0003] After long-term research and development, solar cells have experienced the era of the first generation of crystalline silicon-based solar cells,...

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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