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Perovskite membrane and preparation and application method thereof

An application method and perovskite technology, which is applied in the field of solar cells, can solve problems such as uneven thickness and poor flatness of perovskite films, and achieve the effects of improving flatness, improving solvent resistance, and good experimental repeatability

Inactive Publication Date: 2014-09-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in this method, the reaction rate of the battery surface is different during the reaction process, which often causes the thickness of the film to be different, resulting in poor flatness of the obtained perovskite film.

Method used

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  • Perovskite membrane and preparation and application method thereof
  • Perovskite membrane and preparation and application method thereof
  • Perovskite membrane and preparation and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1 (comparative example)

[0027] will be sputtered with fluorine-doped SnO 2 (FTO) transparent conductive glass was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol in sequence, blown dry with nitrogen, and immediately placed in an ultraviolet ozone surface treatment equipment (UVO) for 15 minutes at 2000rpm The PEDOT:PSS solution was spin-coated at a rotating speed of 100°C, and thermally annealed at a temperature of 150° C. in air for 15 minutes to obtain a hole transport layer with a thickness of about 30 nm. Then PbI 2 with CH 3 NH 3 I was dissolved in DMF (N,N-dimethylformamide) solution at a mass ratio of 1:1, heated for 12 hours to prepare a perovskite solution, and the perovskite solution with a concentration of 30wt% was spun down at a speed of 3000rpm Coated on the hole transport layer, followed by thermal annealing for 2 hours, the thickness of the obtained perovskite layer is 300nm. and then th...

Embodiment 2

[0029] will be sputtered with fluorine-doped SnO 2 (FTO) transparent conductive glass was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol in sequence, blown dry with nitrogen, and immediately placed in an ultraviolet ozone surface treatment equipment (UVO) for 15 minutes at 2000rpm The PEDOT:PSS solution was spin-coated at a rotating speed of 100°C, and thermally annealed at a temperature of 150° C. in air for 15 minutes to obtain a hole transport layer with a thickness of about 30 nm. Then PbI 2 PbI at a concentration of 300 mg / mL 2 The precursor solution was directly spin-coated on the above-mentioned hole transport layer at a speed of 2000rpm, and then placed on the hot stage, and then every 1cm 2 The resulting PbI 2 The membrane uses about CH 3 NH 3 The dosage ratio of I20mg, the CH 3 NH 3 I powder is evenly sprinkled on the obtained PbI 2Around the film, cover it with a petri dish, keep it warm at 150°C for 2 hours...

Embodiment 3

[0031] will be sputtered with fluorine-doped SnO 2 (FTO) transparent conductive glass was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol in sequence, blown dry with nitrogen, and immediately placed in an ultraviolet ozone surface treatment equipment (UVO) for 15 minutes at 2000rpm The PEDOT:PSS solution was spin-coated at a rotating speed of 100°C, and thermally annealed at a temperature of 150° C. in air for 15 minutes to obtain a hole transport layer with a thickness of about 30 nm. Then PbI 2 PbI at a concentration of 300 mg / mL 2 The precursor solution was directly spin-coated on the above-mentioned hole transport layer at a speed of 2000rpm, and then placed on the hot stage, and then every 1cm 2 The resulting PbI 2 The membrane uses about CH 3 NH 3 The dosage ratio of I20mg, the CH 3 NH 3 I powder is evenly sprinkled on the obtained PbI 2 Around the membrane, cover it with a Petri dish, keep it warm at 150°C for 4 ...

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Abstract

The invention belongs to the technical field of solar cells and particularly relates to a perovskite membrane and a preparation and application method of the perovskite membrane. The perovskite membrane is generated through a two-step method, a PbI2 membrane is prepared through a solution processing method, and thus the technology is simple and efficient. Besides, due to the two-step method, the flatness of the surface of the perovskite membrane is effectively improved, recombination of carriers on the active layer interface is greatly reduced, the anti-solvent performance of the material is effectively improved, and the performance of a device is obviously improved. The perovskite membrane further has the advantages of being simple in preparation technology, low in cost, good in experimental repeatability, suitable for large-scale industrial production and the like.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a perovskite film and a preparation and application method thereof. Background technique [0002] The perovskite-type solar cells that have emerged in recent years have attracted much attention due to their outstanding advantages such as high efficiency, low cost, light weight, simple manufacturing process, and large-area flexible devices. Since 2009, the development of perovskite cells has been very rapid, and it took less than four years to develop from less than 5% efficiency to 16% efficiency. Therefore, this type of solar cell has become a research hotspot in the field of photovoltaics. In 2013, the research on perovskite solar cells was selected as one of the world's top ten scientific and technological advances of the year. [0003] Perovskite solar cells specifically refer to the use of ABO 3 configured perovskite materials such as CH 3 NH 3 wxya 3 (...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/0264
CPCH10K71/12H10K85/00H10K30/20Y02E10/549Y02P70/50H10K85/50
Inventor 谭占鳌李聪侯旭亮于露屈江江
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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