Unlock instant, AI-driven research and patent intelligence for your innovation.

A perovskite solar cell based on metal nanoparticle interface modification and its preparation method

A technology of metal nanoparticles and solar cells, applied in the field of solar cells, can solve problems such as insufficient absorption, and achieve the effects of improving photoelectric conversion efficiency, high short-circuit current, and high photoelectric conversion efficiency

Active Publication Date: 2018-02-23
CENT SOUTH UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A perovskite solar cell based on metal nanoparticle interface modification and its preparation method
  • A perovskite solar cell based on metal nanoparticle interface modification and its preparation method
  • A perovskite solar cell based on metal nanoparticle interface modification and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0027] The commercial ITO was sonicated in an ultrasonic cleaning machine for 15 minutes each through acetone, detergent, deionized water and isopropanol, then dried with a nitrogen stream, and then treated with ozone for 20 minutes.

[0028] Place the cleaned and ozone-treated ITO glass on a spin coater, spin-coating at a speed of 3000 revolutions per minute to prepare the hole transport layer PEDOT:PSS, and then anneal it on a 150 degree heating stage for 15 minutes.

[0029] Au@SiO 2 Nanoparticles were prepared into ethanol solutions with concentrations of 0.032pM, 0.047pM and 0.095pM, and then sonicated for 5 minutes, fully dispersed, spin-coated on the PEDOT:PSS layer at a speed of 3000 rpm, and then annealed at 120 degrees for 5 minutes , Au@SiO prepared 2 The morphology and size distribution of the nanoparticle layer are as figure 2 , image 3 with Fi...

Embodiment 2

[0038] The commercial ITO was sonicated in an ultrasonic cleaning machine for 15 minutes each through acetone, detergent, deionized water and isopropanol, then dried with a nitrogen stream, and then treated with ozone for 20 minutes.

[0039] Place the cleaned and ozone-treated ITO glass on a spin coater, spin-coating at a speed of 3000 revolutions per minute to prepare the hole transport layer PEDOT:PSS, and then anneal it on a 150 degree heating stage for 15 minutes.

[0040] Au@SiO 2 The nanoparticles were prepared into an ethanol solution with a concentration of 0.047pM, then sonicated for 5 minutes, fully dispersed, and then spin-coated on the PEDOT:PSS layer at a speed of 3000 rpm, and annealed at 120 degrees for 5 minutes.

[0041] Mix lead bromide and bromomethylamine into a DMF solution with a concentration of 500mg / ml at a molar ratio of 1:1, heat it at 60 degrees for one hour, and then add the perovskite CH 3 NH 3 PbBr 3 The precursor solution is deposited on Au@SiO while r...

Embodiment 3

[0046] The commercial ITO was sonicated in an ultrasonic cleaning machine for 15 minutes each through acetone, detergent, deionized water and isopropanol, then dried with a nitrogen stream, and then treated with ozone for 20 minutes.

[0047] Place the cleaned and ozone-treated ITO glass on a spin coater, spin-coating at a speed of 3000 revolutions per minute to prepare the hole transport layer PEDOT:PSS, and then anneal it on a 150 degree heating stage for 15 minutes.

[0048] Au@SiO 2 The nanoparticles were prepared into an ethanol solution with a concentration of 0.047pM, then sonicated for 5 minutes, fully dispersed, and then spin-coated on the PEDOT:PSS layer at a speed of 3000 rpm, and annealed at 120 degrees for 5 minutes.

[0049] Mix lead chloride, lead iodide and bromomethylamine at a molar ratio of 1:1:1 to a DMF solution with a concentration of 580mg / ml, heat it at 60 degrees for one hour, and then add the perovskite CH 3 NH 3 PbI x Cl 3-x The precursor solution is deposit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
wavelengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a perovskite solar cell based on metal nanoparticle interface modification and a preparation method thereof; a thin layer is added between the hole transport layer and the perovskite active layer of the planar heterojunction perovskite solar cell Silica-coated gold (Au@SiO2) nanoparticles, Au@SiO2 nanoparticles with a length between 20 nm and 60 nm and a width between 5 nm and 25 nm; Au@SiO2 nanoparticles can generate surface plasmons Resonance increases the optical path of light in the perovskite active layer and improves the absorption of light by the perovskite active layer, thereby significantly improving the photoelectric conversion efficiency of perovskite solar cells; compared with perovskite without Au@SiO2 nanoparticles Compared with mineral solar cells, the photoelectric conversion efficiency of perovskite solar cells with Au@SiO2 nanoparticles can be increased by more than 35%; the preparation method of perovskite solar cells based on metal nanoparticle interface modification of the present invention is prepared by solution technology at low temperature , good repeatability, low cost and broad application prospects.

Description

Technical field [0001] The invention relates to a perovskite solar cell based on metal nano particle interface modification and a preparation method thereof, and belongs to the field of solar cells. Background technique [0002] Perovskite solar cells have attracted much attention in the photovoltaic field due to their high efficiency, low cost, and roll-to-roll printing preparation. The photoelectric conversion efficiency has risen from 3.8% to more than 20%, which is now comparable to 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), integrated in photovoltaic roof, portable electronic device power supply and aerospace Such applications have great potential. Although multidisciplinary efforts have made the efficiency of perovskite solar cells have risen to a level comparable to that of silicon-based solar cells, there are still many scientific issues and technologies in order to promote the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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