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 tra

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] Example 1

[0045] On the uncoated surface of a 200mm×300mm anti-reflective coated solar cell glass, use a coating rod to coat ethyl orthosilicate with acidic hydrolysis in ethanol. The particle size is 5-10nm and the mass percentage concentration is 5%. 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 glass transmittance is increased to 95.5%. Further apply tin tetrachloride ammonia hydrolysis and oxalic acid peptization, and add fluorine-doped tin oxide nano-hydrosol with a 5% mass percentage of ammonium fluoride tin dioxide. The coating layer is dried and solidified at 150°C to form a thickness It is a 600nm fluorine-doped tin oxide gel film. Coat the fluorine-doped tin oxide gel film with an ethanol solution of silver nitrate with a mass percentage of 10% for 3 times, and then coat with an ethanol solution of stannous chloride with a mass percentage of 10%. Heat treatment at ℃ for 0.5h to form a ...

Example Embodiment

[0055] Example 2

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

[0057] Add dilute ammonia to the aqueous solution of ethyl orthosilicate to pH 9-10, stir and react for 24-36 hours, and 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 to obtain nano-silica hydrosol with a mass percentage concentration of 5%.

[0058] Nano SiO 2 Add the stannous acetate reducing agent solution to the hydrosol, add dropwise silver nitrate dilute solution, Ag to the solution at 60-80℃ + Ions are first adsorbed on nano-SiO 2 On the surface of the particles, further with the Sn in the solution 2+ Reaction to generate nano Ag particles, AgNO 3 After the solution is added dropwise, continue the heat preservation reaction for 0.5h...

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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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