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High-performance perovskite solar cell

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

Active Publication Date: 2018-11-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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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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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 high-performance perovskite solar cell. The solar cell structure sequentially comprises a conductive substrate, an electron transport layer, a perovskite light absorption layer, a hole transport layer and an anode layer from bottom to top, wherein the perovskite light absorption layer contains an additive; the additive is one of 2,6-ditert-butyl-4-methylphenol, acesulfamepotassium or sodium cyclamate; the additive is added to a perovskite precursor solution; the dosage of the additive accounts for 5-30% of total mass of the perovskite precursor solution; and the thickness of a thin film of the perovskite light absorption layer is 300-500nm. According to the high-performance perovskite solar cell, the film-forming quality of perovskite is improved through adding the additive, and holes are reduced, thereby reducing recombination of photoelectrons, improving the photoelectric property of the perovskite and obtaining the perovskite solar cell with high current density and high efficiency; and the high-performance perovskite solar cell has the advantages of being mild and controllable in condition, simple in preparation, low in cost and 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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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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