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A kind of perovskite solar cell

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low carrier recombination probability, low photoelectric conversion efficiency, and poor film quality, with simple methods and low cost , the effect of improving the shape

Inactive Publication Date: 2021-08-17
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-performance calcium oxide with low carrier recombination probability and high photoelectric conversion efficiency for the problems of low photoelectric conversion efficiency, poor stability and poor film formation quality of existing perovskite solar cells. Titanium Solar Cells

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  • A kind of perovskite solar cell
  • A kind of perovskite solar cell
  • A kind of perovskite solar cell

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Embodiment 1

[0024] Such as figure 1 As shown, the high-performance perovskite solar cell structure of the present invention includes a conductive substrate 1 , an electron transport layer 2 , a perovskite light-absorbing layer 3 , a hole transport layer 4 and an anode layer 5 from bottom to top. The conductive substrate 1 is a transparent conductive substrate FTO, and the electron transport layer 2 is TiO 2 The mixed crystal electron transport layer, the perovskite light-absorbing layer 3 is a perovskite light-absorbing layer with additives, and the anode layer 5 is an Ag electrode.

[0025] The preparation method of the above-mentioned high-performance perovskite solar cell is as follows:

[0026] (1) FTO (tin oxide doped with F) conductive glass substrate is cleaned, blown dry with dry nitrogen, and carry out ultraviolet ozone pretreatment;

[0027] (2) Prepare TiO with a thickness of 60nm on a clean FTO conductive substrate 2 The dense thin film layer is the electron transport layer...

Embodiment 2

[0036] The preparation method of a kind of high-performance perovskite solar cell is as follows:

[0037] (1) FTO (tin oxide doped with F) conductive glass substrate is cleaned, blown dry with dry nitrogen, and carry out ultraviolet ozone pretreatment;

[0038] (2) Prepare TiO with a thickness of 60nm on a clean FTO conductive substrate 2 The dense thin film layer is the electron transport layer;

[0039] (3) methylammonium iodide and lead iodide are dissolved in N, in the N-dimethylimide, the concentration of methylammonium iodide and lead iodide is 1.2mol / L, then add acesulfame potassium, its The amount accounts for 8% of the total mass of the perovskite precursor solution, heating, stirring evenly, standing still for a period of time, filtering, and the filtrate is the precursor solution containing additives; on the surface of the prepared electron transport layer in step (2) Spin-coat the precursor solution, and place the prepared sample on a heating table at 50-200°C fo...

Embodiment 3

[0048] The preparation method of a kind of high-performance perovskite solar cell is as follows:

[0049] (1) FTO (tin oxide doped with F) conductive glass substrate is cleaned, blown dry with dry nitrogen, and carry out ultraviolet ozone pretreatment;

[0050] (2) Prepare TiO with a thickness of 60nm on a clean FTO conductive substrate 2 The dense thin film layer is the electron transport layer;

[0051] (3) Dissolve methylammonium iodide and lead iodide in N,N-dimethylimide, the concentration of methylammonium iodide and lead iodide is 1.2mol / L, then add sodium cyclamate , its consumption accounts for 14% of the total mass of the perovskite precursor solution, heating, stirring evenly, standing still for a period of time, filtering, and the filtrate is the precursor solution containing additives; the prepared electron transport layer in step (2) Spin-coat the precursor solution on the surface. After the spin-coating, place the prepared sample on a heating table and heat it...

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Abstract

The invention discloses a perovskite solar cell. The solar cell structure includes a conductive substrate, an electron transport layer, a perovskite light-absorbing layer, a hole transport layer and an anode layer from bottom to top. The perovskite light-absorbing layer The layer contains an additive, and the additive is one of 2,6-di-tert-butyl-4-methylphenol, acesulfame potassium or sodium cyclamate, and the additive is added to the perovskite precursor solution; The dosage of the additive accounts for 5-30% of the total mass of the perovskite precursor solution; the film thickness of the perovskite light-absorbing layer is 300-500nm. The invention improves the film-forming quality of its perovskite by adding additives, reduces holes, thereby reduces the recombination of photoelectrons, improves the photoelectric performance of perovskite, and obtains a perovskite solar cell with high current density and high efficiency, with mild conditions It has the advantages of controllability, simple preparation, low cost, and is suitable for large-scale commercial production.

Description

technical field [0001] The invention belongs to the field of organic photoelectric technology, in particular to a high-performance perovskite solar cell. Background technique [0002] At present, solar cells are mainly faced with problems to be solved: (1) improving its photoelectric conversion efficiency and battery life, (2) adopting new technologies and materials to reduce production costs. In recent years, perovskite solar cells have grown rapidly from the initial 3.8% to more than 20%. The factors that enable the rapid development of perovskite solar cells are: a wide range of visible light absorption, fast carrier mobility, simple cell structure, and high photoelectric conversion efficiency. The structures of perovskite solar cells mainly include mesoporous and planar structures. The perovskite solar cells with a planar structure do not have mesoporous materials, which avoids the high-temperature sintering process introduced by the mesoporous thin film treatment, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K30/30H10K2102/00Y02E10/549
Inventor 黄跃龙金礼芬马柱于华彭长涛
Owner SOUTHWEST PETROLEUM UNIV
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