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Graphene-containing solar cell and preparation method thereof

A technology of solar cells and graphene, which is applied in the field of solar cells containing graphene and its preparation, can solve the problems of low manufacturing cost, achieve the effects of increasing conversion rate, improving conversion efficiency, and improving time stability

Inactive Publication Date: 2016-01-27
杨秋香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The above-mentioned inventions gradually promote the industrialization of perovskite solar cells. However, the industrialization of perovskite depends on two conditions. One is low manufacturing cost, but its conversion efficiency is high, and its efficiency is still at present. Below 15%

Method used

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  • Graphene-containing solar cell and preparation method thereof

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Embodiment 1

[0032] 1) Low-iron glass is used as the light-transmitting layer;

[0033] 2) Aluminum zinc oxide AZO conductive glass is used as the transparent electrode layer;

[0034] 3) Prepare a NiO layer on the surface of conductive glass by spraying thermal decomposition technology, with a thickness of 35nm;

[0035] 3) A mixed solution of nickel hexanoate acetone, lithium acetate, and magnesium acetate tetrahydrate was prepared according to the molar ratio of 1:1:3, spin-coated on the transition layer, and dried at 400°C to prepare the electron transport layer; thickness 64nm;

[0036] 4) Prepare light absorbing layer:

[0037] a. Prepare PbI2 solution, the concentration is 0.5Mol / L, and the solvent is dimethylformamide;

[0038]b. Prepare CH3NH3I solution: the concentration is 10 mg / mL, and the solvent is isopropanol;

[0039] In-situ synthesis of perovskite materials by solution method: spin-coat PbI2 solution on the electron transport layer first, dry it and soak it in CH3NH3I...

Embodiment 2

[0047] 1) Low-iron glass is used as the light-transmitting layer;

[0048] 2) Aluminum zinc oxide AZO conductive glass is used as the transparent electrode layer;

[0049] 3) Prepare a NiO layer on the surface of conductive glass by spraying thermal decomposition technology; the thickness is controlled at 15nm;

[0050] 4) According to the molar ratio of 2:1:3, a mixed solution of nickel acetone caproate, lithium acetate, and magnesium acetate tetrahydrate was prepared, spin-coated on the transition layer, and dried at 360°C to prepare the electron transport layer; thickness 53nm;

[0051] 5) Prepare light absorbing layer:

[0052] a. Prepare PbI2 solution, the concentration is 2.0Mol / L, and the solvent is dimethylformamide;

[0053] b. Prepare CH3NH3I solution: concentration 8mg / mL, solvent is isopropanol;

[0054] In-situ synthesis of perovskite materials by solution method: spin-coat PbI2 solution on the electron transport layer first, dry it and soak it in CH3NH3I solu...

Embodiment 3

[0064] 1) Low-iron glass is used as the light-transmitting layer;

[0065] 2) Use fluorine tin oxide (FTO, fluorinated opedtinoxide) conductive glass as the transparent electrode layer;

[0066] 3) Prepare a NiO2 layer on the surface of conductive glass by spraying thermal decomposition technology; the thickness is 50nm;

[0067] 4) According to the molar ratio of 1:1:10, a mixed solution of nickel acetone hexanoate, lithium acetate, and magnesium acetate tetrahydrate was prepared, spin-coated on the transition layer, and dried at 350°C to prepare the electron transport layer; thickness 99nm;

[0068] 5) Prepare light absorbing layer:

[0069] a. prepare PbI2 solution, concentration is 2.3Mol / L, and solvent is dimethylformamide;

[0070] b. Prepare CH3NH3I solution: the concentration is 7.5mg / mL, and the solvent is isopropanol;

[0071] In-situ synthesis of perovskite materials by solution method: spin-coat PbI2 solution on the electron transport layer first, dry it and so...

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Abstract

The invention discloses a graphene-containing solar cell and a preparation method thereof. The solar cell comprises: a light transmissive layer, a transparent electrode layer, a transition layer, an electron transmission layer, a light absorption layer, an electron absorption layer, a hole transmission layer and a top electrode which are successively laminated. The transition layer is made of oxides of nickel; the electron transmission layer is made of quaternary oxides; the light absorption layer is made of a material with a perovskite structure; the electron absorption layer is constituted of graphene and graphene oxides; the hole transmission layer is constituted of ternary oxides; the top electrode is constituted of a material with excellent conductivity. The photoelectric conversion efficiency of the solar cell is increased to 20% and above and the solar cell is suitable for mass production.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, in particular to a graphene-containing solar cell and a preparation method thereof. Background technique [0002] With the shortage of traditional fossil energy and increasingly serious environmental problems, high-efficiency, low-energy consumption, and pollution-free solar cells have attracted the attention of various countries. In 2009, Japanese scientist Miyasaka first used perovskite-based semiconductors for liquid-state sensitized solar cells. Among them, a photoelectric conversion efficiency of 3.8% has been achieved, but due to the corrosion of the electrolyte, the cell efficiency decays rapidly. With the deepening of research, the efficiency of perovskite solar cells has been further improved, and the highest efficiency certified by NREL has reached 17.9%. In just 5 years, the efficiency of perovskite solar cells has improved rapidly, which has attracted widespread attention from t...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K30/10Y02E10/549
Inventor 杨秋香
Owner 杨秋香
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