Perovskite solar cell based on metal nanoparticle interface modification and preparation method of perovskite solar cell

A technology of metal nanoparticles and solar cells, which is applied in the field of solar cells, can solve problems such as insufficient absorption, and achieve the effects of improved photoelectric conversion efficiency, high fill factor, and high photoelectric conversion efficiency

Active Publication Date: 2016-04-06
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of insufficient light absorption by the active layer of traditional perovskite solar cells, and introduce a Novel metal nanomaterials with surface plasmon resonance are used as modification layers to improve the light absorption ability of the perovskite active layer and improve the photoelectric conversion efficiency of perovskite solar cells

Method used

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  • Perovskite solar cell based on metal nanoparticle interface modification and preparation method of perovskite solar cell
  • Perovskite solar cell based on metal nanoparticle interface modification and preparation method of perovskite solar cell
  • Perovskite solar cell based on metal nanoparticle interface modification and preparation method of perovskite solar cell

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Embodiment 1

[0026] according to figure 1 Schematic diagram of perovskite solar cell device structure for device fabrication.

[0027] Commercial ITO was sonicated in an ultrasonic cleaner for 15 minutes through acetone, detergent, deionized water and isopropanol, then dried with nitrogen flow, and then treated with ozone for 20 minutes.

[0028] The cleaned and ozone-treated ITO glass was placed on a spin coater, and spin-coated at a speed of 3000 rpm to prepare a hole transport layer PEDOT:PSS, and then annealed on a 150-degree heating platform for 15 minutes.

[0029] AuSiO 2 Nanoparticles were made into ethanol solutions with concentrations of 0.032pM, 0.047pM and 0.095pM, and then ultrasonicated for 5 minutes to fully disperse, spin-coated on the PEDOT:PSS layer at a speed of 3000 rpm, and then annealed at 120 degrees for 5 minutes , prepared AuSiO 2 The morphology and size distribution of the nanoparticle layer are as follows figure 2 , image 3 and Figure 4 ; image 3 It can ...

Embodiment 2

[0038] Commercial ITO was sonicated in an ultrasonic cleaner for 15 minutes through acetone, detergent, deionized water and isopropanol, then dried with nitrogen flow, and then treated with ozone for 20 minutes.

[0039] The cleaned and ozone-treated ITO glass was placed on a spin coater, and spin-coated at a speed of 3000 rpm to prepare a hole transport layer PEDOT:PSS, and then annealed on a 150-degree heating platform for 15 minutes.

[0040] AuSiO 2 Nanoparticles were made into an ethanol solution with a concentration of 0.047pM, then ultrasonicated for 5 minutes to fully disperse, then spin-coated on the PEDOT:PSS layer at a speed of 3000 rpm, and annealed at 120 degrees for 5 minutes.

[0041] Lead bromide and methyl bromide are prepared in a molar ratio of 1:1 into a DMF solution with a concentration of 500 mg / ml, heated at 60 degrees for one hour, and then the perovskite CH 3 NH 3 PbBr 3 Spin deposition of precursor solution onto AuSiO at 4000 rpm 2 The thin layer ...

Embodiment 3

[0046] Commercial ITO was sonicated in an ultrasonic cleaner for 15 minutes through acetone, detergent, deionized water and isopropanol, then dried with nitrogen flow, and then treated with ozone for 20 minutes.

[0047] The cleaned and ozone-treated ITO glass was placed on a spin coater, and spin-coated at a speed of 3000 rpm to prepare a hole transport layer PEDOT:PSS, and then annealed on a 150-degree heating platform for 15 minutes.

[0048] AuSiO 2 Nanoparticles were made into an ethanol solution with a concentration of 0.047pM, then ultrasonicated for 5 minutes to fully disperse, then spin-coated on the PEDOT:PSS layer at a speed of 3000 rpm, and annealed at 120 degrees for 5 minutes.

[0049] Lead chloride, lead iodide and methyl bromide are prepared in a molar ratio of 1:1:1 into a DMF solution with a concentration of 580 mg / ml, heated at 60 degrees for one hour, and then the perovskite CH 3 NH 3 PB x Cl 3-x Spin deposition of precursor solution onto AuSiO at 4000 ...

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Abstract

The invention discloses a perovskite solar cell based on metal nanoparticle interface modification and a preparation method of the perovskite solar cell. In the perovskite solar cell, a thin layer of silicon dioxide coated gold (Au@SiO2) nanoparticles is additionally arranged between a hole transmission layer and a perovskite active layer of a planar heterojunction perovskite solar cell, the length of the Au@SiO2 nanoparticles is ranging from 20 nanometers to 60 nanometers, and the width of the Au@SiO2 nanoparticles is ranging from 5 nanometers to 25 nanometers; surface plasma resonance can be generated by the Au@SiO2 nanoparticles, so that the optical path of light in the perovskite active layer is increased, the absorption of the perovskite active layer to the light is improved, and the photoelectric conversion efficiency of the perovskite solar cell can be obviously improved; and compared with the perovskite solar cell without the Au@SiO2 nanoparticles, the photoelectric conversion efficiency of the perovskite soalr cell with the Au@SiO2 nanoparticles can be improved by over 35%. The preparation method of the perovskite solar cell based on metal nanoparticle interface modification, disclosed by the invention, is implemented by a solution technique at a low temperature, is high in repeatability and low in cost, and has a wide application prospect.

Description

technical field [0001] The invention relates to a perovskite solar cell based on metal nanoparticle interface modification and a preparation method thereof, belonging to the field of solar cells. Background technique [0002] Due to the advantages of high efficiency, low cost and roll-to-roll printing preparation, perovskite solar cells have attracted much attention in the field of photovoltaics. The photoelectric conversion efficiency has climbed from 3.8% to more than 20% which can now be compared with silicon-based solar cells ( J.Am.Chem.Soc., 2009, 131, 6050; Nature, 2013, 499, 316; Nature, 2013, 501, 395; 2014, 345, 542; Science, 2014, 344, 458), in photovoltaic roof integration, portable electronic device power supply and aerospace applications have great potential. Although multidisciplinary efforts have raised the efficiency of perovskite solar cells to a level comparable to that of silicon-based solar cells, there are still many scientific issues and technologies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01L51/44H01L51/48H01L31/18
CPCH01L31/1884H01G9/2027H10K71/00H10K30/821Y02E10/549Y02E10/542Y02P70/50
Inventor 阳军亮吴闰生杨兵初张楚俊黄玉兰高永立
Owner CENT SOUTH UNIV
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