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Design, synthesis and application of hole transport material of perovskite solar cell

A hole transport material, solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of complex multi-step synthesis route, not easy to form, affect solubility, etc., achieve easy availability of raw materials, reduce preparation Cost, low price effect

Inactive Publication Date: 2017-07-18
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the reported D-A type and triphenylamine-based non-doped HTMs still require relatively high-cost raw materials, multi-step synthetic routes, or complex purification steps.
In addition, the rigid conjugated backbone of D-A conjugated polymers will affect its solubility, making it difficult for such HTMs to form thinner high-quality films.
So far, the reported low-cost non-doped HTMs with PSCs efficiency higher than 16% are still relatively few.

Method used

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  • Design, synthesis and application of hole transport material of perovskite solar cell
  • Design, synthesis and application of hole transport material of perovskite solar cell
  • Design, synthesis and application of hole transport material of perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 3, the synthesis of 6-PVCz-OMeDAD;

[0041]

[0042] Synthesis of intermediate (1): at 50°C, 3,6-dibromocarbazole (3.25g, 10mmol), potassium hydroxide (2.25g, 40mmol), potassium carbonate (13.82g, 100mmol), tetrabutyl Ammonium bromide (0.32mg, 1mmol) was dissolved in 1,2-dichloroethane (100mL) and reacted in a one-necked flask for 3-5h. After the reaction, the solid in the solution was removed, extracted with dichloromethane, the organic phase was dried with anhydrous magnesium sulfate, the organic solvent was spin-dried, and compound 2 was obtained by column chromatography.

[0043] Synthesis of intermediate (2): Compound 1 (3.87g, 10mmol) was mixed with 4,4'-dimethoxydiphenylamine (5.73g, 25mmol) and tris(dibenzylideneacetone)dipalladium (0.18g, 0.2mmol), tri-tert-butylphosphine tetrafluoroborate (0.08g, 0.3mmol) and potassium tert-butoxide (3.36g, 30mmol) were added to the toluene solution, and heated to 110°C while stirring under the protection of n...

Embodiment 22

[0046] Example 2 Synthesis of 2,7-PVCz-OMeDAD;

[0047]

[0048] Synthesis of intermediate (1): at 50°C, 2,7-dibromocarbazole (3.25g, 10mmol), potassium hydroxide (2.25g, 40mmol), potassium carbonate (13.82g, 100mmol), tetrabutyl Ammonium bromide (0.32mg, 1mmol) was dissolved in 1,2-dichloroethane (100mL) and reacted in a one-necked flask for 3-5h. After the reaction, the solid in the solution was removed, extracted with dichloromethane, the organic phase was dried over anhydrous magnesium sulfate, and the organic solvent was spin-dried to obtain compound 2 by column chromatography.

[0049] Synthesis of intermediate (2): Compound 2 (3.87g, 10mmol) was mixed with 4,4'-dimethoxydiphenylamine (5.73g, 25mmol) and tris(dibenzylideneacetone)dipalladium (0.18g, 0.2mmol), tri-tert-butylphosphine tetrafluoroborate (0.08g, 0.3mmol) and potassium tert-butoxide (3.36g, 30mmol) were added to the toluene solution, and heated to 110°C while stirring under the protection of nitrogen. Af...

Embodiment 3

[0052] Embodiment 3 3, the synthesis of 6-PVCz-OMeDAT;

[0053]

[0054] Synthesis of intermediate (1): at 50°C, 3,6-dibromocarbazole (3.25g, 10mmol), potassium hydroxide (2.25g, 40mmol), potassium carbonate (13.82g, 100mmol), tetrabutyl Ammonium bromide (0.32mg, 1mmol) was dissolved in 1,2-dichloroethane (100mL) and reacted in a one-necked flask for 3-5h. After the reaction, the solid in the solution was removed, extracted with dichloromethane, the organic phase was dried over anhydrous magnesium sulfate, and the organic solvent was spin-dried to obtain compound 1 by column chromatography.

[0055] Synthesis of intermediate (2): Compound 1 (3.87g, 10mmol) was mixed with 4,4'-dimethoxy-4"-boric acid pinacol ester-triphenylamine (10.78g, 25mmol) and tetrakis(triphenyl Phosphine) palladium (0.462g, 0.4mmol) was added to 2M potassium carbonate aqueous solution (45mL), toluene / ethanol (120mL, v / v=2:1) ​​mixed solution, under the protection of nitrogen, at 110 ℃ The reaction w...

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PUM

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Abstract

The invention discloses a hole transport material of a perovskite solar cell. The material is nonconjugated polymer molecules jointly formed by nonconjugated polyvinyl main chains and arylamine substituted carbazole side chains. The hole transport material is prepared through a simple process, and raw materials used are easy to obtain and low in price. Due to good solution processing performance of the hole transport material, a thin, high-quality film with high hole mobility can form on the perovskite material, so that the preparation cost of devices is further reduced. When the material as a non-doped hole transport material is applied to the perovskite solar cell, the device efficiency higher than 16% is realized, so that the hole transport material is applicable to stable, low-cost flexible perovskite solar cells on a large scale.

Description

technical field [0001] The invention belongs to the field of new materials for perovskite solar cells, and more specifically relates to the design, synthesis and application of a type of hole transport material for perovskite solar cells. Background technique [0002] Organic-inorganic halide perovskite solar cells (PSCs) have attracted extensive attention due to their facile fabrication process, low cost, and high efficiency. In just a few years, the photoelectric conversion efficiency of PSCs has exceeded 22%, becoming one of the most important research hotspots in the field of photovoltaics today. In efficient conventional n-i-p-type PSCs, hole transport materials (HTMs) have been extensively studied as important interfacial layers between perovskite crystals and metal electrodes. HTMs play a very important role in promoting the extraction and transport of holes and inhibiting the carrier recombination at the interface between perovskite and HTM, which can significantly ...

Claims

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Application Information

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IPC IPC(8): C08F126/06C07D209/86C07D209/88H01L51/42H01L51/44
CPCC07D209/86C07D209/88C08F126/06H10K85/111H10K30/10Y02E10/549
Inventor 殷成蓉秦天石徐亚超王建浦黄维
Owner NANJING UNIV OF TECH
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