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A stable large-area perovskite solar cell and its preparation method

A solar cell and perovskite technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as unstable prices of organic hole transport materials, unsuitability for large-area solar cell applications, and low photoelectric conversion efficiency, achieving Improving photoelectric conversion efficiency and stability, overcoming photocatalytic decomposition of perovskite light-absorbing materials, and low cost

Inactive Publication Date: 2018-11-23
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Perovskite solar cells are currently mainly used in 2, 2’, 7, 7’-four [ N , N -Bis(4-methoxyphenyl)amino]-9,9'-spirobifluorene (spiro-OMeTAD) as a hole-transporting material is not suitable for large-area solar cells due to the instability and high price of organic hole-transporting materials. For battery applications, inorganic hole transport materials represented by cuprous iodide are being researched and developed. Some patents also disclose perovskite solar cells without a hole transport layer, but their photoelectric conversion efficiency is usually relatively low, and it still needs to be developed. Seeking 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

[0041] 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 tin oxide transpar...

Embodiment 2

[0052] 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.

[0053] Add dilute ammonia to the aluminum trichloride solution to the pH of the solution to pH 7-8, the aluminum salt is completely hydrolyzed to form a hydrated alumina precipitate, and the precipitate is washed with deionized water to be free of chloride ions. Disperse the precipitate in deionized water, add glycolic acid solution to make the solution pH 1-3, heat and peptize at 60-80°C for 8 hours to form nano-alumina ions with a particle size of 50nm, and then add 0.8% polyurethane emulsion to stabilize it. To obtain a nano alumina hydrosol with a mass percentage concentration of 6%.

[0054] Nano Al 2 O 3 Add the hydrazine hydrate reducing agent solution to the hydrosol, and add the dilute silver nitrate solution and Ag dropwise to the solution at 60-80℃ + Ions are first adsorb...

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Abstract

The invention relates to a stable large-area perovskite solar cell, which is composed of strip-shaped batteries with a length of 200-300 mm, a width of 15-30 mm, and an interval of 1 mm; the porous skeleton of the light-absorbing layer is nano-Ag Composite nanoparticle porous skeleton film formed by high-temperature sintering of particles and nano-Al2O3, ZrO2 or SiO2, the porosity of the film is 30%-60%, the film thickness is 400-1200nm, and the surface sheet resistance is 102-104Ω; its hole transport layer is Smooth and uniform manganese dioxide crystalline film; the photoelectric conversion efficiency of perovskite solar cell components is 12%‑14%. The invention can conveniently regulate the surface square resistance of the porous skeleton material, overcome the inherent shortcomings of the nano-TiO2 light-absorbing layer porous skeleton material, and improve the photoelectric conversion efficiency and stability of large-area perovskite solar cells.

Description

Technical field [0001] The invention relates to a stable large-area perovskite solar cell and a preparation method thereof, in particular to a large-area perovskite solar cell that uses insulator nano particles and low-resistance nano silver particles as a light absorption layer framework material and the same The preparation method belongs to the technical field of new energy and new materials. technical background [0002] Perovskite solar cells are usually composed of five parts: transparent conductive glass, dense layer, perovskite light absorption layer, hole transport layer and back electrode. The perovskite light absorbing layer is usually composed of perovskite light absorbing material and porous nano material film as the skeleton. The perovskite light absorbing layer is the core part of the perovskite solar cell. It consists of the light absorbing layer skeleton and the perovskite light. It is composed of absorbing material, and its thickness is generally 200-600nm. Its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/151H10K30/15Y02E10/549
Inventor 李建生齐国鹏王少杰于韶梅刘雅楠刘美红
Owner TIANJIN VOCATIONAL INST
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