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Magnesium-doped titanium dioxide based perovskite solar cell and preparation method thereof

A technology of solar cells and titanium dioxide, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as high density of states, lower process temperature, and low film conductivity, and achieve high stability, large surface area, and reduced grain boundaries Effect

Active Publication Date: 2018-07-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure TiO 2 Thin films have shortcomings such as low conductivity and high density of defect states. In order to improve these defects, it is often necessary to treat TiO 2 Doping treatment, but the doping process is often completed under high temperature conditions, which violates the original intention of reducing the process temperature

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  • Magnesium-doped titanium dioxide based perovskite solar cell and preparation method thereof
  • Magnesium-doped titanium dioxide based perovskite solar cell and preparation method thereof
  • Magnesium-doped titanium dioxide based perovskite solar cell and preparation method thereof

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preparation example Construction

[0034] The preparation method of the perovskite solar cell based on nickel-doped titanium dioxide mainly includes the following steps:

[0035] Step 1, providing a conductive base, and etching grooves on the conductive base. Specifically, FTO conductive glass is provided as a conductive substrate, and the conductive substrate includes a substrate glass 1 and an FTO conductive layer 2 disposed on the substrate glass 1, the groove runs through the FTO conductive layer 2, and is adjacent to One end of the conductive substrate; the conductive substrate is treated with dilute hydrochloric acid and zinc powder with a concentration of 2mol / L-2.5mol / L to etch the groove. Among them, the FTO conductive glass is sputtered with a layer of fluorine-doped SnO on the silicon-boron-based substrate glass. 2 conductive layer of glass.

[0036] In step 2, the conductive substrate is cleaned and dried, and then the conductive substrate is treated with ultraviolet and ozone. Specifically, the ...

Embodiment 1

[0045] The preparation method of the magnesium-doped titanium dioxide-based perovskite solar cell provided by the first embodiment of the present invention mainly includes the following steps:

[0046] 11. Using FTO conductive glass as the conductive substrate, treat the FTO conductive layer of the conductive substrate with dilute hydrochloric acid and zinc powder at a concentration of 2 mol / L to etch grooves.

[0047] 12. Use acetone, ethanol, and deionized water to ultrasonically clean the conductive substrate for 15 minutes, then dry it with nitrogen flow, and then treat the FTO conductive layer with ultraviolet and ozone for 30 minutes.

[0048] 13. Place the conductive substrate vertically in the beaker containing the growth solution after being fixed by the cage, then place the beaker in a constant temperature water bath, and control the reaction temperature at 70°C, and the growth time is 3 hours, and finally Anneal for 1-1.5 hours to form a photoanode, and the annealin...

Embodiment 2

[0053] The preparation method of the magnesium-doped titanium dioxide-based perovskite solar cell provided by the second embodiment of the present invention mainly includes the following steps:

[0054] 21. Using FTO conductive glass as the conductive substrate, treat the FTO conductive layer of the conductive substrate with dilute hydrochloric acid and zinc powder at a concentration of 2 mol / L to etch grooves.

[0055] 22. Use acetone, ethanol, and deionized water to ultrasonically clean the conductive substrate for 15 minutes, then dry it with nitrogen flow, and then treat the FTO conductive layer with ultraviolet and ozone for 30 minutes.

[0056] 23. Place the conductive substrate vertically in the beaker containing the growth solution after being fixed by the cage, then place the beaker in a constant temperature water bath, and control the reaction temperature at 70°C, and the growth time is 3 hours, and finally Anneal for 1-1.5 hours to form a photoanode, and the anneali...

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Abstract

The invention belongs to the micro-nano manufacturing related technical fields and discloses a magnesium-doped titanium dioxide based perovskite solar cell and a preparation method thereof. The methodincludes steps: (1) cleaning a conductive substrate; (2) adopting a water bath method for deposition of a rutile-phase magnesium-doped titanium dioxide film on the conductive substrate, and annealingat 100-120 DEG C to form a photo-anode; (4) performing spin coating of perovskite precursor solution on the surface of the photo-anode to obtain a photo-absorption layer; (5) performing evaporation of a copper phthalocyanine layer on the surface of the photo-absorption layer to form a hole transport layer; (6) adopting a silk-screen printing commercial carbon blade for film formation to form a carbon counter electrode layer on the hole transport layer. Production cost is reduced, cell performances and stability are remarkably improved, and large-scale commercial cell production is benefited.

Description

technical field [0001] The invention belongs to the technical field related to micro-nano manufacturing, and more specifically relates to a magnesium-doped titanium dioxide-based perovskite solar cell and a preparation method thereof. Background technique [0002] In the field of energy, with the development of industry, the fossil energy contained in the earth is gradually being exhausted, and solar energy, as an inexhaustible clean energy, has become the focus of human development, while traditional inorganic solar cells are due to the preparation process The shortcomings of complexity, strict production environment requirements, and large environmental pollution no longer meet the requirements of further development of human equipment. Therefore, new solar cells such as perovskite solar cells are becoming a research hotspot. Since 2009, Japan's Miyasaka et al. first used organometallic halide CH with a perovskite structure 3 NH 3 PbBr 3 and CH 3 NH 3 PB 3 Since the ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44
CPCH10K30/151H10K30/81Y02E10/549Y02P70/50
Inventor 廖广兰刘星月史铁林刘智勇韩京辉涂玉雪叶海波汤自荣
Owner HUAZHONG UNIV OF SCI & TECH
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