Biological macromolecule modified perovskite solar cell and preparation method thereof

A biomacromolecule and solar cell technology, which is applied in the field of biomacromolecule-modified perovskite solar cells and its preparation, can solve the problems of low conductivity, achieve low equipment requirements, simple operation, and improve battery efficiency.

Active Publication Date: 2019-06-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One object of the present invention is to solve the problem of mesoporous TiO 2 When used as an electron transport layer, TiO 2 There are a large number of oxygen vacancies on the surface and inside, resulting in TiO 2 The problem of low conductivity

Method used

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  • Biological macromolecule modified perovskite solar cell and preparation method thereof
  • Biological macromolecule modified perovskite solar cell and preparation method thereof
  • Biological macromolecule modified perovskite solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030]A method for preparing a perovskite solar cell based on a DNA-modified mesoporous electron transport layer, comprising the steps of:

[0031] S1. Clean the etched FTO (tin oxide doped with F) conductive glass substrate, dry it with dry nitrogen after cleaning, and perform ultraviolet ozone pretreatment.

[0032] S2. Preparation of dense TiO on a clean FTO (F-doped tin oxide) conductive glass substrate 2 The seed layer has a film thickness of 40 nm. The specific operation method is: prepare a titanium isopropoxide ethanol solution with a concentration of 0.25mol / L, and prepare TiO on the FTO conductive substrate by spin coating. 2 Thin film of dense layer, heated and annealed at 500°C for 30min.

[0033] S3. Prepare mesoporous TiO with 15mL concentrated hydrochloric acid, 15mL deionized water and 0.7ml butyl titanate 2 Precursor solution for hydrothermal reaction, on mesoporous TiO 2 Add DNA to the hydrothermal reaction precursor solution so that the concentration of ...

Embodiment 2

[0039] A method for preparing a perovskite solar cell based on a DNA-modified mesoporous electron transport layer, the steps of which are the same as in Example 1, except that in step S3, the concentration of DNA in the precursor solution is 0.1 mg / mL.

Embodiment 3

[0041] A method for preparing a perovskite solar cell based on a DNA-modified mesoporous electron transport layer, the steps of which are the same as in Example 1, except that in step S3, the concentration of DNA in the precursor solution is 0.3 mg / mL.

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PUM

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Abstract

The invention discloses a biological macromolecule modified perovskite solar cell. The solar cell structure comprises a conductive substrate, an electron transporting layer, a light absorption layer,a hole transporting layer and a metal electrode layer in sequence from bottom to top, wherein the electron transporting layer is composed of a lower dense electron transporting layer and an upper mesoporous electron transporting layer, the mesoporous electron transporting layer is modified by biological macromolecules, and the biological macromolecules are one or more of protein, nucleic acid, lipids and saccharides. The mesoporous electron transporting layer is mesoporous TiO<2> prepared through a hydrothermal method. According to a modification method of the mesoporous electron transportinglayer, the biological macromolecules are added into a mesoporous TiO<2> hydrothermal reaction precursor solution, and the hydrothermal method is adopted to prepare the biological macromolecule modified mesoporous TiO<2> electron transporting layer on the dense electron transporting layer. According to the solar cell, the nontoxic biological macromolecule modified mesoporous electron transporting layer is adopted to improve electron transporting characteristics, and therefore the performance of the solar cell is improved.

Description

technical field [0001] The invention belongs to the field of organic photoelectric technology, in particular to a biomacromolecule modified perovskite solar cell and a preparation method thereof. Background technique [0002] Solar energy is a clean and non-polluting energy with huge reserves, which is less affected by the geographical environment and is favored by scientists all over the world. Photothermal conversion and photoelectric conversion are the two main ways people use solar energy at present, among which solar photoelectric conversion technology has become one of the most promising ways to solve the fossil energy crisis. At present, solar cells are mainly faced with problems to be solved: (1) improving its photoelectric conversion efficiency and battery life, (2) adopting new technologies and materials to reduce production costs. In recent years, perovskite solar cells have developed rapidly, and their device efficiencies have exceeded 23% in just a few years. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCY02E10/549
Inventor 庄稼卢红林马柱易静王秦涛
Owner SOUTHWEST PETROLEUM UNIV
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