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A kind of interface modification material

An interface modification and derivative technology, applied in semiconductor devices, electrical components, photovoltaic power generation, etc., can solve problems such as environmental pollution and insufficient interface modification work.

Active Publication Date: 2019-06-21
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Since the 21st century, energy problems have become increasingly prominent. At present, non-renewable fossil energy such as coal and oil is the main source of energy in today's society, but they will cause serious environmental pollution in the process of mining, transportation, processing and use, such as the greenhouse effect, Haze, soil agglomeration, etc., so the development of renewable clean energy is imminent
[0005] At present, most of the reported work on the interface modification of perovskite devices is aimed at the traditional device structure, and there is not much work on the interface modification of the inverted device structure.

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Examples

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Embodiment example 1

[0016] Zinc(II) 5,10,15,20-tetrakis[5-(4-acetylmercaptopentyloxy)phenyl]porphyrin as poly(3,4-ethylenedioxythiophene / The interface modification layer of polystyrene sulfonate (PEDOT:PSS) / perovskite has the following molecular structure formula:

[0017]

[0018] Step 1: ITO substrate cleaning

[0019] Use a mixture of zinc powder and dilute hydrochloric acid to etch a 1.5cm x 1.5cm ITO substrate, and then ultrasonically clean the etched ITO in deionized water, acetone, and isopropanol for 15 minutes, and finally blow it with nitrogen. Dry and irradiate in UV-ozone for 15 minutes.

[0020] Step 2: Device Preparation

[0021] (1) ITO / PEDOT with modified layer: PSS / porphyrin / perovskite / PCBM / C 60 Preparation of / BCP / Al:

[0022] PEDOT:PSS was first spin-coated onto an ozone-treated ITO substrate (6000 revolutions per minute (rpm), 60 seconds (S)) and annealed at 120°C for 30 minutes, then transferred to a nitrogen atmosphere glove box In; Zinc (II) 5,10,15,20-tetra[5-(ace...

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Abstract

The invention relates to the application of porphyrin derivatives in the interface modification of hole transport layer / perovskite layer in inverted perovskite solar cells. The device structure is: ITO / hole transport layer / perovskite layer / electron transport layer / cathode . Using porphyrin on the interface of the hole transport layer / perovskite layer in perovskite solar cells, firstly, it can adjust the morphology of the perovskite layer, reduce the defect density in the film, and improve the quality of the perovskite layer; secondly , the introduction of a porphyrin interface modification layer can effectively block the transport of electrons from the perovskite to the hole transport layer, and at the same time facilitate the injection and transport of holes from the perovskite to the hole transport layer, which is conducive to the improvement of device efficiency. improve. In addition, due to the good solubility of porphyrin, it can be introduced into perovskite solar cells by solution spin-coating method, which is very simple and reproducible.

Description

technical field [0001] The invention relates to the application of porphyrin derivatives in the interface modification of hole transport layer / perovskite layer in inverted perovskite solar cells. Background technique [0002] Since the 21st century, energy problems have become increasingly prominent. At present, non-renewable fossil energy such as coal and oil is the main energy source in today's society, but they will cause serious environmental pollution during the process of mining, transportation, processing and use, such as the greenhouse effect, Haze, soil agglomeration, etc., so the development of renewable clean energy is imminent. Among them, solar energy resources are inexhaustible, inexhaustible, clean and pollution-free, and can be used safely. Therefore, rational use of solar energy is one of the effective ways to solve energy problems, and solar cells can directly convert solar energy into electrical energy. received the attention of researchers. [0003] Sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48H01L51/46
CPCH10K85/331H10K85/371H10K85/381H10K30/00Y02E10/549
Inventor 高德青李波波郑朝月朱杰黄维
Owner NANJING TECH UNIV