A kind of perovskite solar cell based on tricarbazole derivative hole transport material and polymer synergistic effect and preparation method thereof

Abstract

The invention discloses a perovskite solar cell in which a hole transport material based on tricarbazole derivatives and a polymer synergizes and a preparation method thereof. The battery comprises a conductive layer, an electron transport layer, a light absorbing layer, a synergistic layer, a hole transport layer and a counter electrode layer, the light absorbing layer is a perovskite structure material, the synergistic layer is a polymer, and the hole transport layer consists of Tricarbazole derivatives. The preparation method is as follows: the TiO2 electron transport layer is spin-coated on the FTO conductive glass layer, the perovskite light-absorbing layer is spin-coated on the electron-transport layer, the polymer synergistic layer is spin-coated on the light-absorbing layer, and the hole transport layer is spin-coated on the polymerization layer. On the material synergistic layer, the surface of the FTO conductive glass layer and the hole transport layer are plated with gold as the counter electrode. The hole transport material of the perovskite solar cell of the present invention has high hole mobility and good energy level matching, and the polymer used inhibits the degradation and charge recombination of the perovskite, and improves the open circuit voltage and FF value of the cell , enhancing the conversion efficiency of the battery.

Description

technical field

[0001] The invention relates to a perovskite solar cell in which a hole transport material based on tricarbazole derivatives and a polymer synergize and a preparation method thereof. Background technique

[0002] With the increasing demand for low-cost and sustainable energy, solar cells have attracted great attention from all over the world. Among all kinds of solar cells, dye-sensitized solar cells occupy a large part of the solar cell market because of their direct conversion of solar energy to electric energy, high photoelectric conversion efficiency, and mature technology. However, dye-sensitized solar cells have many disadvantages, such as leakage, solvent volatilization, and redox electrode corrosion, which make it difficult to commercialize liquid dye-sensitized solar cells on a large scale.

[0003] Perovskite solar cells can effectively solve many shortcomings of dye-sensitized solar cells, so it has become a hot spot in solar cell research. At pr...

Examples

preparation example Construction

[0048] A method for preparing a perovskite solar cell based on a tricarbazole derivative-based hole transport material and a synergistic effect of a polymer, comprising the following steps:

[0049] 1) After etching the FTO conductive glass, clean it;

[0050] 2) TiO 2 The solution is used as an electron transport layer, and is spin-coated on the FTO conductive glass layer after step 1) processing, and then heat-treated;

[0051]3) After soaking the FTO conductive glass treated in step 2), heat treatment is carried out;

[0052] 4) making a precursor solution for the perovskite light-absorbing layer;

[0053] 5) Spin-coat the precursor solution in step 4) on the TiO in step 3) 2 On the electron transport layer, annealing is carried out again;

[0054] 6) making the polymer into a synergistic layer solution;

[0055] 7) Spin coating the synergistic layer solution in step 6) on the perovskite light-absorbing layer in step 5), and then perform annealing treatment;

[0056] ...

Embodiment

[0071] 1. Synthesis of hole transport materials SP-11 and SP-12

[0072] The specific synthesis routes of the hole transport materials tricarbazole derivatives SP-11 and SP-12 are shown in the attached figure 2 shown. This schematic diagram shows only an example of the synthesis method, and the method of the present invention is not limited to the related substances shown in the figure. Concrete synthetic steps are as follows:

[0073] 1. Compound 2

[0074]

[0075] Take a 100mL schlenk bottle, repeatedly vacuumize and pass nitrogen three times to form an anhydrous and oxygen-free system. In the case of maintaining nitrogen gas, compound 1 (34.18mmol), 4-iodoanisole (85.46mmol), cuprous iodide (3%), 1,10-phenanthroline (3%mmol) and Potassium hydroxide (8 mmol) was added to the reactor. After removing water and oxygen from toluene, add 300 mL with a syringe as a reaction solvent. The oil bath was heated to 115° C. and stirred for 8 hours, the reaction solution was co...

technical field

[0001] The invention relates to a perovskite solar cell in which a hole transport material based on tricarbazole derivatives and a polymer synergize and a preparation method thereof. Background technique

[0002] With the increasing demand for low-cost and sustainable energy, solar cells have attracted great attention from all over the world. Among all kinds of solar cells, dye-sensitized solar cells occupy a large part of the solar cell market because of their direct conversion of solar energy to electric energy, high photoelectric conversion efficiency, and mature technology. However, dye-sensitized solar cells have many disadvantages, such as leakage, solvent volatilization, and redox electrode corrosion, which make it difficult to commercialize liquid dye-sensitized solar cells on a large scale.

[0003] Perovskite solar cells can effectively solve many shortcomings of dye-sensitized solar cells, so it has become a hot spot in solar cell research. At pr...

Examples

preparation example Construction

[0048] A method for preparing a perovskite solar cell based on a tricarbazole derivative-based hole transport material and a synergistic effect of a polymer, comprising the following steps:

[0049] 1) After etching the FTO conductive glass, clean it;

[0050] 2) TiO 2 The solution is used as an electron transport layer, and is spin-coated on the FTO conductive glass layer after step 1) processing, and then heat-treated;

[0051]3) After soaking the FTO conductive glass treated in step 2), heat treatment is carried out;

[0052] 4) making a precursor solution for the perovskite light-absorbing layer;

[0053] 5) Spin-coat the precursor solution in step 4) on the TiO in step 3) 2 On the electron transport layer, annealing is carried out again;

[0054] 6) making the polymer into a synergistic layer solution;

[0055] 7) Spin coating the synergistic layer solution in step 6) on the perovskite light-absorbing layer in step 5), and then perform annealing treatment;

[0056] ...

Embodiment

[0071] 1. Synthesis of hole transport materials SP-11 and SP-12

[0072] The specific synthesis routes of the hole transport materials tricarbazole derivatives SP-11 and SP-12 are shown in the attached figure 2 shown. This schematic diagram shows only an example of the synthesis method, and the method of the present invention is not limited to the related substances shown in the figure. Concrete synthetic steps are as follows:

[0073] 1. Compound 2

[0074]

[0075] Take a 100mL schlenk bottle, repeatedly vacuumize and pass nitrogen three times to form an anhydrous and oxygen-free system. In the case of maintaining nitrogen gas, compound 1 (34.18mmol), 4-iodoanisole (85.46mmol), cuprous iodide (3%), 1,10-phenanthroline (3%mmol) and Potassium hydroxide (8 mmol) was added to the reactor. After removing water and oxygen from toluene, add 300 mL with a syringe as a reaction solvent. The oil bath was heated to 115° C. and stirred for 8 hours, the reaction solution was co...

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