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Perovskite solar cell with synergic effect of triazolylcarbazole derivative-based hole transport material and polymers, and preparation method thereof

A hole transport material, tricarbazole technology, applied in the field of perovskite solar cells and their preparation, can solve the problems of perovskite degradation when encountering water, affecting the service life of batteries, etc., and achieves inhibition of molecular aggregation and energy level matching. Good, the effect of increasing the FF value

Active Publication Date: 2016-12-14
SUN YAT SEN UNIV
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Problems solved by technology

At present, the photoelectric conversion efficiency of perovskite batteries has exceeded 20%, although there are still many problems, such as the degradation of perovskite in water, which affects the service life of the battery

Method used

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  • Perovskite solar cell with synergic effect of triazolylcarbazole derivative-based hole transport material and polymers, and preparation method thereof
  • Perovskite solar cell with synergic effect of triazolylcarbazole derivative-based hole transport material and polymers, and preparation method thereof
  • Perovskite solar cell with synergic effect of triazolylcarbazole derivative-based hole transport material and polymers, and preparation method thereof

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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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Abstract

The present invention discloses a perovskite solar cell with a synergic effect of a triazolylcarbazole derivative-based hole transport material and polymers, and a preparation method thereof. The cell comprises a conductive layer, an electron transport layer, a light absorbing layer, a synergic layer, a hole transport layer and a counter electrode layer. The light absorbing layer is made of a perovskite material, the synergic layer is made of polymers, and the hole transport layer consists of the triazolylcarbazole derivative. The preparation method comprises the steps of spin coating a TiO<2> electron transport layer on an FTO conductive glass layer, spin coating a perovskite light absorbing layer on the electron transport layer, spin coating a polymer synergic layer on the light absorbing layer, spin coating the hole transport layer on the polymer synergic layer, and plating gold on surfaces of the FTO conductive glass layer and the hole transport layer, so as to be used as counter electrodes. The hole transport material of the perovskite solar cell has high hole mobility, the energy level matching is high, all polymers prohibit decomposition of the perovskite and charge recombination the open circuit voltage of the cell and an FF value are improved, and the conversion efficiency of the cell is improved.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/48
CPCH10K71/12H10K85/146Y02E10/549
Inventor 刘军民苏成勇苏培洋秦苏黄礼博徐耀维陈逸凡
Owner SUN YAT SEN UNIV
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