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Hole transport material of perovskite solar cell, and preparation method and application of hole transport material

A technology of hole transport materials and solar cells, which is applied in the field of solar cell materials, can solve problems such as insufficient matching of energy band structures, insufficient open circuit voltage and fill factor of perovskite cells, and low carrier transport efficiency, achieving photoelectric Improved conversion efficiency, good matching, and improved energy band structure

Active Publication Date: 2019-09-10
上海黎元新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the open circuit voltage and fill factor of perovskite cells prepared by traditional inorganic hole transport layer materials are not high enough, which is mainly due to the insufficient matching of its own energy band structure with the perovskite energy band structure, and the low carrier transport efficiency. caused

Method used

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  • Hole transport material of perovskite solar cell, and preparation method and application of hole transport material
  • Hole transport material of perovskite solar cell, and preparation method and application of hole transport material

Examples

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Embodiment 1

[0041] The present embodiment provides a kind of perovskite solar cell, it has such as figure 1 The structure shown was prepared by the following steps:

[0042] (1) Glass cleaning: Etch the FTO glass with zinc powder and dilute hydrochloric acid, and cut the etched glass into small glasses of 2.5×2.5 cm. Sonicate the small glass with detergent, deionized water, ethanol, and acetone for 20 minutes each. Blow dry with nitrogen and treat in UV ozone machine for 30 minutes.

[0043] (2) Preparation of hole transport layer Preparation of precursor solution: preparing an inorganic hole transport material solution containing rare metal element ions. Mix indium chloride with a molar ratio of 0.5% and nickel oxide as the solute, then add 35mL of acetonitrile and 5mL of ethanol to it, and rotate it on a rotating table at 65°C for 12h. If there is still a small amount of solute in the solution, add an appropriate amount of Add 1-2mL of DMSO to prepare a nickel oxide concentration of ...

Embodiment 2

[0049] This embodiment provides a perovskite solar cell, which is prepared through the following steps:

[0050] (1) Glass cleaning: Etch the FTO glass with zinc powder and dilute hydrochloric acid, and cut the etched glass into small glasses of 2.5×2.5 cm. Sonicate the small glass with detergent, deionized water, ethanol, and acetone for 20 minutes each. Blow dry with nitrogen and treat in UV ozone machine for 30 minutes.

[0051] (2) Preparation of hole transport layer Preparation of precursor solution: preparing an inorganic hole transport material solution containing rare metal element ions. Mix beryllium bromide and nickel oxide with a molar ratio of 0.5% as a solute, then add 35mL of acetonitrile and 5mL of ethanol to it, and rotate it on a rotating table at 65°C for 5 hours. If there is still a small amount of solute in the solution, add it in an appropriate amount 1-2mL of DMSO, the prepared nickel oxide concentration is 10mg / mL.

[0052] (3) Preparation of the hole...

Embodiment 3

[0064] This embodiment provides a perovskite solar cell, which is prepared through the following steps:

[0065] (1) Glass cleaning: Etch the FTO glass with zinc powder and dilute hydrochloric acid, and cut the etched glass into small glasses of 2.5×2.5 cm. Sonicate the small glass with detergent, deionized water, ethanol, and acetone for 20 minutes each. Blow dry with nitrogen and treat in UV ozone machine for 30 minutes.

[0066] (2) Preparation of hole transport layer Preparation of precursor solution: preparing an inorganic hole transport material solution containing rare metal element ions. Mix indium chloride and CuI with a molar ratio of 0.3% as a solute, then add 35mL of acetonitrile and 5mL of ethanol, and then rotate on a rotary table for 5h. If there is still a small amount of solute in the solution, add 1- 2 mL of DMSO.

[0067] (3) Preparation of the hole transport layer: heating the glass in step (1), filtering the prepared precursor solution of the hole trans...

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Abstract

The invention provides a hole transport material of a perovskite solar cell, and a preparation method and an application of the hole transport material. A hole transport material composition comprisesan inorganic hole transport material and rare metal elements; and a molar ratio of metal elements in the inorganic hole transport material to the rare metal elements is N : 1 (20<=N<=100,000). The hole transport layer of the perovskite solar cell is prepared from the hole transport material composition of the perovskite solar cell. The perovskite solar cell is high in stability and high in conversion efficiency.

Description

technical field [0001] The invention relates to a material for a hole transport layer of a perovskite solar cell, belonging to the technical field of solar cell materials. Background technique [0002] Solar cells can directly convert light energy into electricity. At present, the main products of photovoltaic power generation in the market are composed of silicon crystals or compound crystals such as cadmium telluride and gallium arsenide. However, the preparation of the above-mentioned photovoltaic materials is very complicated, and the energy consumption is huge, which limits the development of the photovoltaic industry to a certain extent. As a representative of the third generation of solar cells, the conversion efficiency of perovskite solar cells has exceeded 23% from the initial 3.8% in just a few years, which makes the photovoltaic industry see the huge potential of developing perovskite solar cells. potential. [0003] In order to further improve the efficiency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K30/10H10K30/00H10K2102/00Y02E10/549
Inventor 毕恩兵陈汉陈林茹鹏斌
Owner 上海黎元新能源科技有限公司
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