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PIN heterojunction solar cell and preparation method thereof

A solar cell and heterojunction technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as inability to mass-produce, and achieve the effects of improving time stability, conversion rate, and conversion efficiency

Inactive Publication Date: 2016-02-17
杨秋香
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The above-mentioned inventions have gradually promoted the industrialization of perovskite solar cells. However, they cannot be mass-produced at present because their efficiency is still below 15%. Finding a higher-efficiency solar cell structure is the goal of people's concerted efforts.

Method used

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  • PIN heterojunction solar cell and preparation method thereof

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Effect test

Embodiment 1

[0032] 1) ITO (Indium Tin Oxides) conductive glass is used as the light-transmitting / transparent electrode layer;

[0033] 2) The NiO layer was prepared on the surface of conductive glass by spraying pyrolysis technology. The thickness is controlled at 15nm;

[0034] 3) According to the molar ratio of 2:1:6, 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 an electron transport layer; thickness 15nm;

[0035] 4) Prepare light-absorbing layer:

[0036] a. prepare PbI2 solution, concentration is 2.3Mol / L, and solvent is dimethylformamide;

[0037] b. Prepare CH3NH3I solution: the concentration is 7.5mg / mL, and the solvent is isopropanol;

[0038] 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 solution to grow perovskite materials, and obtain p...

Embodiment 2

[0048] 1) Aluminum zinc oxide AZO conductive glass is used as the light-transmitting / transparent electrode layer;

[0049] 2) Prepare a NiO2 layer on the surface of conductive glass by spraying thermal decomposition technology; the thickness is 8nm;

[0050] 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 60nm;

[0051] 4) Prepare light absorbing layer:

[0052] a. Prepare PbI2 solution, the concentration is 0.5Mol / L, and the solvent is dimethylformamide;

[0053] b. Prepare CH3NH3I solution: the concentration is 10 mg / mL, and the 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 solution to grow perovskite materials, and obtain p...

Embodiment 3

[0064] 1) Aluminum zinc oxide AZO conductive glass is used as the light-transmitting / transparent electrode layer;

[0065] 2) Prepare a NiO2 layer on the surface of conductive glass by spraying thermal decomposition technology; the thickness is 50nm;

[0066] 3) According to the molar ratio of 1:1:5, a mixed solution of nickel hexanoate acetone, lithium acetate, and magnesium acetate tetrahydrate was prepared, spin-coated on the transition layer, and dried at 300°C to prepare the electron transport layer; thickness Controlled at 10nm;

[0067] 4) Prepare light absorbing layer:

[0068] a. Prepare PbI2 solution, the concentration is 1.5Mol / L, and the solvent is dimethylformamide;

[0069] b. Prepare CH3NH3I solution: the concentration is 8.5 mg / mL, and the solvent is isopropanol;

[0070] 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 solution to grow perovskite materi...

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Abstract

The invention discloses a PIN heterojunction solar cell and a preparation method thereof. The perovskite solar cell comprises a light-transmitting / transparent electrode layer, a transition layer, an electron transfer layer, a light absorbing layer, an electron absorbing layer, a hole transfer layer and a top electrode which are sequentially stacked, wherein the transition layer is made from oxide of nickel; the electron transfer layer is made from quaternary oxide; the light absorbing layer is made from a material with a perovskite structure; the electron absorbing layer is formed by graphene and oxidized graphene; and the hole transfer layer is formed by ternary oxide, and the top electrode is formed by a material with good conductivity. According to the invention, the performance of the perovskite material is effectively utilized, the photoelectric conversion efficiency of the perovskite solar cell is improved by more than 18%, and the solar cell is suitable for batch production.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, in particular to a perovskite solar cell with a heterojunction structure and high photoelectric conversion efficiency and a preparation method thereof. Background technique [0002] In recent years, perovskite solar cells have increasingly become the focus of researchers. This type of material has a series of advantages such as suitable band gap, high light absorption coefficient, high energy conversion rate, simple preparation, and low production cost. This makes people have strong expectations for the commercialization of perovskite solar cells, in order to change the current situation that silicon solar energy mainly relies on government subsidies, and realize the real commercialization of solar cells. [0003] Perovskite solar cells have received much attention recently. Chinese invention patent CN103855307A discloses a perovskite solar cell and its preparation method. The perovskite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42B82Y30/00H01L51/48
CPCB82Y30/00H10K30/40H10K30/00Y02E10/549
Inventor 杨秋香
Owner 杨秋香
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