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

Method for enhancing stability of perovskite solar cell by fluorescent-doped coating

A solar cell and perovskite technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems affecting the development of battery industrialization, decline in battery efficiency, poor battery stability, etc., and achieve easy large-scale promotion and improve stability. , the effect of enhancing stability

Active Publication Date: 2019-10-11
WUHAN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the halide perovskite materials in perovskite solar cells will degrade under the conditions of ultraviolet light, moisture and oxygen, resulting in a rapid decline in cell efficiency or even failure, making the cell stability always poor, which in turn affects the performance of such cells. Industrialization development

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
  • Method for enhancing stability of perovskite solar cell by fluorescent-doped coating
  • Method for enhancing stability of perovskite solar cell by fluorescent-doped coating
  • Method for enhancing stability of perovskite solar cell by fluorescent-doped coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step (1) Select square resistance as 8~115 W cm 2 , the light transmittance> 84% and the width is 1.5 cm, the length is 2 cm, and the total area is 3 cm 2ITO glass was used as the substrate, and ultrasonically cleaned with ethanol and isopropanol for 10 min each.

[0043] Step (2) Electron transport layer TiO 2 layer preparation.

[0044] Spin-coat 30 mL of the solution on the surface of the ITO substrate at a speed of 3000 rpm-40 s, and place the film on a hot stage at 150 °C for 30 min to obtain TiO with a smooth and dense surface. 2 film.

[0045] Step (3) Preparation of perovskite thin film

[0046] The prepared perovskite precursor solution was spin-coated on TiO 2 layer to obtain a perovskite layer film, and place the prepared perovskite film on a hot stage at 100 °C for thermal annealing for 30 min to obtain a smooth and dense perovskite film.

[0047] Step (4) Hole transport layer poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) and MoO 3 layer prep...

Embodiment 2

[0063] All the steps and methods of preparing the battery are exactly the same as those in the previous embodiment 1

[0064] Step (1) Preparation of fluorescent doped coating solution

[0065] Weigh 26 mg of polymer PEMA and dissolve it in 572 mL of toluene solvent, heat and stir at 125 °C and 1100 rpm to prepare a polymer solution with a concentration of 5% by weight, and then weigh 5 mg of fluorescent molecule MDP3FL solution. A fluorescent doping solution with a PEMA concentration of 3% and a fluorescent molecule MDP3FL of 1% was prepared in the polymer solution.

[0066] Step (2) Preparation of fluorescent doped coating

[0067] The glass slides were ultrasonically cleaned with ethanol and isopropanol for 10 min, and then the glass slides were blown dry for Plasma surface treatment. Take 45 mL of the prepared solution and spin-coat it on a 1.5 cm wide surface with a one-step spin-coating method at 3000 rpm-40 s. The length is 2 cm and the total area is 3 cm 2 On the gl...

Embodiment 3

[0075] All the steps and methods of preparing the battery are exactly the same as those in the previous embodiment 1

[0076] Step (1) Preparation of fluorescent doped coating solution

[0077] Weigh 17.2 mg of polymer PEMA and dissolve it in 379 mL of toluene solvent, heat and stir at 130 °C and 1200 rpm to prepare a polymer solution with a mass fraction of 5%, and then weigh 5 mg of fluorescent molecule MDP3FL solution. A fluorescent doping solution with a PEMA concentration of 7% and a fluorescent molecule MDP3FL of 1.5% was prepared in the polymer solution.

[0078] Step (2) Preparation of fluorescent doped coating

[0079] The glass slides were ultrasonically cleaned with ethanol and isopropanol for 10 min, and then the glass slides were dried for plasma surface treatment. 50 mL of the prepared solution was spin-coated on a 1.5 cm-wide surface in a one-step spin-coating method at 3000 rpm-40 s. The length is 2 cm and the total area is 3 cm 2 On the glass, a flat, trans...

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

No PUM Login to View More

Abstract

The invention discloses a method for enhancing the stability of a perovskite solar cell through a fluorescent-doped coating, and belongs to the field of perovskite solar cells and coatings. The methodcomprises the following steps: (1) dissolving a polymer in a solvent, performing heating, stirring and dissolving to obtain a polymer solution with a certain concentration, and dissolving fluorescentmolecules in the polymer solution to obtain a fluorescent-doped solution; (2) carrying out cleaning and plasma surface treatment on the light receiving surface of a cell, and coating the fluorescent-doped solution on the light receiving surface of the perovskite solar cell in a one-step spin-coating mode. The fluorescent-doped coating can improve the stability of the perovskite solar cell, and facilitates the wide application and development of the perovskite solar cell.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells and coatings, and more particularly relates to a method for enhancing the stability of perovskite solar cells with fluorescent doped coatings. Background technique [0002] Nowadays, the energy problem has become a major problem that plagues us, so it is extremely urgent to develop a sustainable energy source. As a renewable clean energy, solar energy is inexhaustible and inexhaustible. Therefore, in order to rationally develop and utilize solar energy, research on solar cells will become one of the important trends in the development of new energy. [0003] The perovskite solar cell is a solar cell with an all-solid perovskite structure as a light-absorbing material. The preparation process of this material is simple, the cost is low, and it has a good development prospect. Perovskite solar cells have high-efficiency photoelectric conversion characteristics, and the photoelectric conversion...

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
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K30/151H10K30/87Y02E10/549
Inventor 刘丹韩文娇
Owner WUHAN UNIV OF TECH