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High-efficiency and large-area perovskite solar battery and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of high cost, low photoelectric conversion efficiency, unstable price of organic hole transport materials, etc., and achieve improved porosity and good electrical conductivity performance effect

Inactive Publication Date: 2017-01-04
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Perovskite solar cells are currently mainly used in 2, 2’, 7, 7’-four [ N , N -Bis(4-methoxyphenyl)amino]-9, 9'-spirobifluorene (spiro-OMeTAD) can be used as a hole transport material to improve photoelectric conversion efficiency. Due to the instability and high price of organic hole transport materials, it is not Suitable for large-area battery applications, inorganic hole transport materials represented by cuprous iodide are under research and development
Some patents disclose perovskite solar cells without a hole transport layer, but their photoelectric conversion efficiency is usually relatively low, and it is necessary to find cheap and efficient inorganic hole transport materials to adapt to the development of stable large-area perovskite solar cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] On the non-coated surface of a 200mm×300mm anti-reflection coated solar cell glass, use a coating bar to coat tetraethyl orthosilicate, and the particle size formed by acidic hydrolysis in ethanol aqueous solution is 5-10nm, and the mass percentage concentration is 5%. The nano-silica hydrosol, the coating layer is dried and cured at 150°C to form a nano-silica transition layer with a thickness of 100 nm, and the light transmittance of the glass increases to 95.5%. Further coat tin tetrachloride with ammonium hydrolysis and oxalic acid peptization, and add fluorine-doped tin oxide nano-hydrosol with ammonium fluoride and tin dioxide mass percent concentration of 5%, and the coating layer is dried and solidified at 150°C to form a thickness of It is a 600nm fluorine-doped tin oxide gel film. On the fluorine-doped tin oxide gel film, the ethanol solution of 10% silver nitrate by coating mass percentage concentration is 3 times, and then the ethanol solution of 10% stannou...

Embodiment 2

[0056] First complete the preparation of the anti-reflection conductive glass and titanium dioxide dense layer according to Example 1, and prepare the substrate material for the light-absorbing layer.

[0057] Add dilute ammonia water to the aqueous solution of ethyl orthosilicate until the pH of the solution is 9-10, and stir for 24-36 hours. The ethyl orthosilicate is completely hydrolyzed to form nano-silica particles with a particle size of 50nm, and then add 1.0% of its mass of polyurethane Emulsion stabilizer, obtains the nano silicon dioxide hydrosol that mass percent concentration is 5%.

[0058] nano-SiO 2 Add a stannous acetate reducing agent solution to the hydrosol, and add a dilute silver nitrate solution to the solution at 60-80°C, Ag + The ions are first adsorbed on the nano-SiO 2 on the surface of the particle, further interacting with the Sn in the solution 2+ The reaction generates nano-Ag particles, AgNO 3 After the solution is added dropwise, continue t...

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Abstract

The invention relates to a high-efficiency and large-area perovskite solar battery and a preparation method thereof. The photoelectric conversion efficiency of an assembly is 13%-14%. A porous framework of a light absorption layer of the perovskite solar battery is porous framework film formed by sintering silver tin oxide nano particles and nano Al<2>O<3>, ZrO<2> or SiO<2> at a high temperature, the porosity of the film is 30%-50%, the thickness of the film is 400-800 nm, and the surface square resistance is 10<2>-10<3> ohms. A perovskite light absorption material is smooth and uniform CH<3>NH<2>PbI<3> crystalline film. A hole transport layer is smooth and uniform lead dioxide and silicon dioxide composite gel film, the hole transport layer forms good contact with the light absorption layer, and the surface square resistance is 10<2>-10<3> ohms. According to the solar battery and the method, tin salt is taken as silver ion reducing agent, a conductive component and a framework material component of the light absorption layer at the same time, raw materials are reduced, a light absorption layer porous framework preparation technology is simplified, and the photoelectric conversion efficiency and stability of the large-area perovskite solar battery can be improved.

Description

technical field [0001] The invention relates to a high-efficiency large-area perovskite solar cell and a preparation method thereof, in particular to a large-area perovskite solar cell in which insulator nanoparticles and low-resistance silver-tin oxide nanoparticles are used as the framework material for the light-absorbing layer. The battery and its preparation method belong to the technical field of new energy and new materials. [0002] technical background [0003] Perovskite solar cells are usually composed of five parts: transparent conductive glass, dense layer, perovskite light absorbing layer, hole transport layer and back electrode. The perovskite light-absorbing layer is usually composed of a perovskite light-absorbing material and a porous nanomaterial film as a skeleton. The perovskite light-absorbing layer is the core part of a perovskite solar cell. Composed of absorbing materials, its thickness is generally 200-600nm, the main function is to absorb sunlight ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/10H10K2102/00Y02E10/549Y02P70/50
Inventor 李建生李霞于韶梅刘雅楠刘美红田磊
Owner TIANJIN VOCATIONAL INST
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