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Preparation method for environment friendly perovskite type solar battery

An environmentally friendly, solar cell technology, applied in the field of solar cells, can solve the problems of poor stability of perovskite layer, lead-containing light absorption layer, poor photoelectric performance, etc., to improve photoelectric conversion efficiency, improve photoelectric performance, crystallization good effect

Inactive Publication Date: 2018-01-09
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the light absorbing layer of the existing perovskite solar cell often contains lead, which is toxic to the environment, and the stability of the perovskite layer is not good, and the photoelectric performance is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing an environment-friendly perovskite solar cell, comprising the following steps:

[0031] (1) preparing a dense titanium oxide film layer on the surface of the conductive glass layer;

[0032] (2) preparing a mesoporous titanium oxide film layer on the surface of the dense titanium oxide film layer;

[0033] (3) Mix and stir stannous chloride, ethylene glycol, and triethanolamine until the solid dissolves to prepare mixed solution A; mix and stir sodium sulfide and ethylene glycol until the solid dissolves to prepare solution B; wherein, The mass ratio of tin, ethylene glycol and triethanolamine is 0.082:21:4; the concentration of solution B is 7mg / L;

[0034] (4) Add solution B dropwise to mixed solution A, and stir while adding dropwise. After the dropwise addition, continue to stir for 30 minutes, then centrifuge at a speed of 3000 rpm for 30 minutes, and centrifugally wash the precipitate with absolute ethanol for 3-5 times. The washed solid w...

Embodiment 2

[0039] A method for preparing an environment-friendly perovskite solar cell, comprising the following steps:

[0040] (1) preparing a dense titanium oxide film layer on the surface of the conductive glass layer;

[0041] (2) preparing a mesoporous titanium oxide film layer on the surface of the dense titanium oxide film layer;

[0042] (3) Mix and stir stannous chloride, ethylene glycol, and triethanolamine until the solid dissolves to prepare mixed solution A; mix and stir sodium sulfide and ethylene glycol until the solid dissolves to prepare solution B; wherein, The mass ratio of tin, ethylene glycol and triethanolamine is 0.065:20:4; the concentration of solution B is 8mg / L;

[0043](4) Add solution B dropwise to mixed solution A, and stir while adding dropwise. After the dropwise addition, continue to stir for 30 minutes, then centrifuge at a speed of 6000 rpm for 30 minutes, and centrifugally wash the precipitate with absolute ethanol for 3-5 times. The washed solid wa...

Embodiment 3

[0048] A method for preparing an environment-friendly perovskite solar cell, comprising the following steps:

[0049] (1) preparing a dense titanium oxide film layer on the surface of the conductive glass layer;

[0050] (2) preparing a mesoporous titanium oxide film layer on the surface of the dense titanium oxide film layer;

[0051] (3) Mix and stir stannous chloride, ethylene glycol, and triethanolamine until the solid dissolves to prepare mixed solution A; mix and stir sodium sulfide and ethylene glycol until the solid dissolves to prepare solution B; wherein, The mass ratio of tin, ethylene glycol and triethanolamine is 0.068:22:5; the concentration of solution B is 7.2mg / L;

[0052] (4) Add solution B dropwise to mixed solution A, and stir while adding dropwise. After the dropwise addition, continue to stir for 30 minutes, then centrifuge at a speed of 4000 rpm for 30 minutes, and centrifugally wash the precipitate with absolute ethanol for 3-5 times. The washed solid...

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Abstract

The invention discloses a preparation method for an environment friendly perovskite type solar battery. To be specific, the method comprises the following steps: preparing a dense titanium oxide filmon the surface of a conductive glass layer; preparing a meso pore titanium oxide film on the surface of the dense titanium oxide film; preparing a low-concentration SnS nanocrystal dispersion liquid,mixing the SnS nanocrystal dispersion liquid together with halide and iodide powder of bismuth, spin coating the surface of the meso pore titanium oxide film with the prepared mixed liquid to obtain alight absorption layer, and preparing a cavity transmission layer on the surface of the light absorption layer; and in a vacuum condition, plating the cavity transmission layer with Ag electrodes, and finally obtaining a perovskite solar battery. The preparation method is simple in preparation process, and the prepared perovskite solar battery is high in photoelectric conversion efficiency and exhibits great stability.

Description

Technical field: [0001] The invention relates to the field of solar cells, in particular to a method for preparing an environment-friendly perovskite solar cell. Background technique: [0002] The research of perovskite thin-film solar cells has made great progress in recent years, but its relatively poor stability, unfriendly environment and low photoelectric conversion efficiency in large areas lead to its large-scale mass production is still far away. distance. At present, the research on perovskite solar cells mainly focuses on the following aspects: (1) Conversion efficiency, mainly including improving the crystal growth of perovskite layer, optimizing nano-dot doping, optimizing barrier layer, and preparing composite light-absorbing layer. The output performance of perovskite solar cells; (2) stability, mainly by improving the stability of the perovskite layer through material structure optimization; (3) environment-friendly, mainly by replacing the lead element in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCY02E10/549
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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