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Low-shielding large-area perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of unstable price of organic hole transport materials, unsuitability for perovskite battery applications, low photoelectric conversion efficiency, etc., to achieve Excellent light transmittance, improved environmental stability, and good electrical conductivity

Inactive Publication Date: 2016-12-21
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 perovskite battery applications
Inorganic hole transport materials represented by cuprous iodide are under research and development. Some patents also disclose perovskite solar cells without hole transport layers, but their photoelectric conversion efficiency is usually relatively low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 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

[0059] 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.

[0060] Add dilute ammonia water to the aqueous solution of ethyl orthosilicate until the pH of the solution is 9-10, and stir for 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 polyurethane emulsion to stabilize agent to obtain a nano-silica hydrosol with a concentration of 5% by mass.

[0061] Tin tetrachloride is hydrolyzed and precipitated with ammonia water at pH 8-9, and nano-tin oxide hydrosol is prepared by oxalic acid peptization method, and then ammonium fluoride solution is added to control the molar ratio of tin oxide and ammonium fluoride to 1:0.4 to form a mixed The particle size of the nanoparticles in the tin oxyfluoride sol is 8nm. nano-SiO 2 Add FTO nanoparti...

Embodiment 3

[0069] 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.

[0070] Add dilute nitric acid to the aqueous solution of aluminum isopropoxide until the pH of the solution is 1-12, stir and react for 24 hours, completely hydrolyze to form nano-alumina particles with a particle size of 100nm, and then add 2.0% of its mass of polyurethane emulsion stabilizer to obtain the mass percent Concentration of 7% nano-alumina hydrosol.

[0071] Hydrolyze and precipitate tin tetrachloride with ammonia water at pH 8-9, prepare nano tin oxide hydrosol by oxalic acid peptization method, then add antimony fluoride solution, control the molar ratio of tin oxide and antimony fluoride to 1:0.05, and form antimony The particle size of the nanoparticles in the fluorine co-doped tin oxide sol is 12nm. Nano Al 2 o 3 Add FATO nanoparticle hydrosol to the hydros...

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Abstract

The invention relates to a low-shielding large-area perovskite solar cell which has component photoelectric conversion efficiency of 14% to 15%. According to the perovskite solar cell, a light absorption layer porous skeleton is a porous skeleton thin film formed by doping tin oxide transparent conductive nano particles and transparent nonconductive nano particles Al2O3, ZrO2 or SiO2 and carrying out high-temperature sintering, a porosity of the thin film is 30% to 50%, a porosity diameter is 5 to 20nm, a thickness of the thin film is 400 to 800nm, light transmittance is 80% to 95%, and a surface square resistance is 102 to 103ohm; a perovskite absorbing material is a smooth and uniform CH3NH2PbI3 crystallized film; and a hole transmission layer is a smooth and uniform molybdenum trioxide-silicon dioxide gel film. According to the low-shielding large-area perovskite solar cell disclosed by the invention, by regulating and controlling light transmittance, the porosity and the surface square resistance of the light absorption layer porous skeleton, shielding of the porous skeleton for the sunlight is reduced, light transmission is improved, electrical conductivity is improved, and photoelectric conversion efficiency of the large-area perovskite solar cell is improved.

Description

technical field [0001] The invention relates to a low-shielding large-area perovskite solar cell and a preparation method thereof, in particular to a compound of large-diameter transparent non-conductive oxide nanoparticles and small-diameter doped tin oxide transparent conductive oxide nanoparticles as a The invention relates to a large-area perovskite solar cell with a light-absorbing layer framework material and a preparation method thereof, belonging 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 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 thi...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/151Y02E10/549
Inventor 李建生何涛王韬王雅楠
Owner TIANJIN VOCATIONAL INST
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