Inorganic perovskite solar cell and preparation method thereof

A technology of solar cells and inorganic calcium, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of excessive crystallization speed of inorganic perovskite solar cells and the influence of perovskite thin films, and achieve the goal of increasing thickness and increasing current Effect

Active Publication Date: 2020-06-19
SHAANXI NORMAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned shortcoming of the prior art, provide a kind of inorganic perovskite solar cell and preparation method thereof; To solve the problem that the crystallization speed of the inorganic perovskite solar cell prepared in the air is too fast and the influence of moisture on the perovskite film The problem

Method used

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  • Inorganic perovskite solar cell and preparation method thereof
  • Inorganic perovskite solar cell and preparation method thereof
  • Inorganic perovskite solar cell and preparation method thereof

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preparation example Construction

[0036] The invention discloses an inorganic perovskite solar cell prepared in a high-humidity environment and a preparation method thereof. The method can reduce the crystallization rate of the perovskite film and overcome the influence of high humidity on the perovskite precursor film, thereby ensuring the quality of the perovskite film and the performance of the perovskite device. The entire preparation process of the perovskite battery has no special requirements on the environment, except that the final gold electrode is evaporated in a vacuum environment, and the rest of the steps have no special requirements for the environment, especially for high-humidity air environments. This method is also applicable. The preparation includes the following step:

[0037] Step 1, cleaning the conductive glass substrate 1;

[0038] The conductive glass substrate 1 is fluorine-doped tin oxide conductive glass, and the cleaning process is sequentially cleaning with ethanol, isopropanol...

Embodiment 1

[0054] Step 1, cleaning of the conductive glass substrate 1: ultrasonically clean the cut FTO conductive glass substrate in ethanol, isopropanol, and acetone for 30 minutes each, and then blow dry with a dry air flow.

[0055] Step 2, preparation of the electron transport layer; preparation of the electron transport layer 2: the FTO substrate was treated with ultraviolet ozone for 10 minutes, and a layer of TiO was deposited on the cleaned FTO surface by the hydrothermal insulation deposition method. 2 As the electron transport layer 2, the hydrothermal insulation temperature is 70°C, and the precursor is TiCl 4 .

[0056] Step 3, prepare all-inorganic perovskite light-absorbing layer 4; The HPbI of 0.393g 3 , 0.150g HPbBr 3 and 0.178g of CHCsO 2 Dissolve in 1mL of DMSO solution to form a perovskite precursor solution with a concentration of 1mol / mL, and then spin-coat the perovskite precursor solution on TiO 2 Surface, the specific spin-coating process is when the conduct...

Embodiment 2

[0061] In this embodiment, in step 3, the solute concentration of the perovskite precursor solution is 1.1mol / L, the low-speed spin-coating speed of the perovskite absorbing layer is 800rpm, and the time is 20s; the high-speed spin-coating speed is 3500rpm, and the time is 40s; the heating temperature of the conductive glass substrate in the spin-coating process is 60°C; the annealing temperature of the perovskite film prepared after spin-coating is 280°C, and the annealing time is 8min; the thickness of the metal electrode is 60nm.

[0062] All the other unrelated parts are the same as in Example 1.

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Abstract

The invention discloses an inorganic perovskite solar cell and a preparation method thereof. Compared with a traditional perovskite solar cell, the traditional precursor solution components are changed, formate ions and hydrogen ions in the optimized components can spontaneously form acting force in the preparation process, so that the components are prevented from forming a perovskite phase alongwith volatilization of a solvent, the crystallization speed is reduced, and the influence of moisture on the light absorption layer thin film before annealing is greatly reduced. The perovskite thinfilm prepared by the method ensures the photoelectric conversion efficiency of an assembled device, and solves the problem of poor stability of a light absorption layer thin film in a high-humidity environment.

Description

【Technical field】 [0001] The invention belongs to the technical field of thin film solar energy, and in particular relates to an inorganic perovskite solar cell and a preparation method thereof. 【Background technique】 [0002] The sustainable development of society is inseparable from the continuous supply of energy, but with the acceleration of social development, the supply of traditional energy exceeds demand, and the research and development of new energy is imminent. At present, solar energy has been proved to be an inexhaustible clean energy, so the research and development of solar cells has gradually become an important direction of new energy research. Now perovskite solar cells have attracted the attention of the scientific community due to their low cost and good development prospects. Among them, all-inorganic perovskite solar cells have become the focus of research because of their excellent light stability and thermal stability. However, its assembly must be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/46
CPCH10K71/40H10K71/811H10K30/151H10K2102/00Y02E10/549Y02P70/50
Inventor 刘治科段晨阳崔健韩玉赵欢杨少敏刘生忠
Owner SHAANXI NORMAL UNIV
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