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Full-spectrum absorption multilayer perovskite/quantum dot solar cell device and manufacturing method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as the inability to improve photoelectric conversion efficiency and stability, and the inability to absorb full-spectrum energy of incident light, so as to improve photoelectric conversion efficiency, broaden the range of light absorption wavelengths, The effect of improving stability

Active Publication Date: 2020-05-29
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that only a single-layer thin film can be prepared, which cannot completely absorb the full spectrum energy of the incident light, and cannot be directly combined with other types of solar cells to improve photoelectric conversion efficiency and stability.

Method used

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  • Full-spectrum absorption multilayer perovskite/quantum dot solar cell device and manufacturing method thereof
  • Full-spectrum absorption multilayer perovskite/quantum dot solar cell device and manufacturing method thereof
  • Full-spectrum absorption multilayer perovskite/quantum dot solar cell device and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0021] Step 1, cleaning the cathode substrate 1 composed of the glass substrate and the transparent electrode with acetone, detergent, isopropanol and acetone respectively. After 20 minutes of ultraviolet ozone on the substrate, on the cathode substrate, pass TiCl at 70°C in an oven 4 Preparation of TiO by Hydrothermal Method 2 thin film and annealed at 200° C. for 30 minutes to prepare electron transport layer 2 .

[0022] Step 2, 10 minutes of ultraviolet ozone on the substrate, on the electron transport layer 2, the active layer is prepared by spin coating, and the precursor solution is CsPbI with oleylamine ligand dissolved in n-octane 3 For perovskite nanocrystals, after the spin coating stops, spread 175 microliters of methyl acetate on the dry film, after dripping for 5 s, spin coating again to make it dry; repeat spin coating for many times-after dripping, get Perovskite active layer a of about 300-400 nanometers; followed by 70mg / mL FAPbI 3 The precursor solution u...

Embodiment 2

[0026] Step 1, cleaning the cathode 1 composed of the glass substrate and the transparent electrode with acetone, detergent, isopropanol and acetone respectively. After 20 minutes of ultraviolet ozone on the substrate, on the cathode substrate, pass TiCl at 70°C in an oven 4 Preparation of TiO by Hydrothermal Method 2 thin film and annealed at 200° C. for 30 minutes to prepare electron transport layer 2 .

[0027] Step 2, 10 minutes of ultraviolet ozone on the substrate, on the electron transport layer 2, the active layer is prepared by spin coating, and the precursor solution is CsPbI with oleylamine ligand dissolved in n-octane 3 Perovskite nanocrystals; after the spin-coating stopped, spread 175 microliters of methyl acetate on the dry film, after dripping for 5 s, spin-coating again to make it dry; multiple times of spin-coating--after dripping, 300 ~400nm perovskite active layer a; followed by 70mg / mL of FAPbI 3 The precursor solution is spin-coated by the same method ...

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Abstract

The invention discloses a full-spectrum absorption multilayer perovskite / quantum dot solar cell device and a manufacturing method thereof. On an electron transport layer, two perovskite / quantum dots with mutually matched energy levels are used as active layer raw materials and dissolved in a solvent, and the two materials are mutually superposed for multiple times to form a film by adopting a spin-coating method, a Czochralski method or a film scraping method so that a perovskite / quantum dot multilayer superposed light absorption layer with different light absorption bands is obtained. According to the method for preparing a perovskite active layer at a low temperature, the obtained solar cell device can achieve full-spectrum absorption of sunlight, and is high in efficiency, good in repeatability and good in stability; and the manufacturing method provided by the invention is simple and convenient in process, low in cost, good in film uniformity and capable of realizing large-scale production.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a full-spectrum absorption multilayer perovskite / quantum dot solar cell device and a preparation method thereof. Background technique [0002] Perovskite solar cells have attracted much attention in the past few years due to their excellent light absorption ability, low exciton binding energy and long carrier diffusion length. It quickly climbed to 22.1%. In addition, perovskite solar cells have the characteristics of relatively simple cell structure, simple solution method preparation process, and low cost, and have gradually become a very competitive solar cell. [0003] Perovskite solar cells generally adopt a sandwich structure, and the perovskite light-absorbing layer is placed between the electron-transporting layer and the hole-transporting layer. Among them, small molecules or polymers are often used as hole transport materials for batteries, and metal o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/152H10K30/15H10K30/151H10K30/10Y02E10/549Y02P70/50
Inventor 马万里李方超袁建宇凌旭峰
Owner SUZHOU UNIV
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