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Preparation and application of organic hole transport material taking triptycene tripyrazine as core

A hole-transporting material and hole-transporting layer technology, used in organic chemistry, semiconductor/solid-state device manufacturing, photovoltaic power generation, etc., can solve problems such as complex synthesis and purification processes, increased battery manufacturing costs, and increased battery manufacturing costs. , to achieve good device stability, high photoelectric conversion efficiency, and good solubility

Active Publication Date: 2020-05-12
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PTAA and Spiro-OMeTAD need to use P-type dopants and additives, such as tert-butylpyridine (TBP), lithium bistrifluoromethanesulfonimide (LiTFSI), due to their poor conductivity and low hole mobility. ), etc., to improve the conductivity of the hole transport layer
However, the use of these dopants and additives will reduce the stability of the battery on the one hand, and increase the production cost of the battery on the other hand.
In addition, the synthesis and purification process of Spiro-OMeTAD is relatively complicated, which further increases the production cost of the battery

Method used

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  • Preparation and application of organic hole transport material taking triptycene tripyrazine as core
  • Preparation and application of organic hole transport material taking triptycene tripyrazine as core
  • Preparation and application of organic hole transport material taking triptycene tripyrazine as core

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Experimental program
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Embodiment 1

[0040] Synthesis of hole transport material TT-OMeTPA and its application in perovskite solar cells:

[0041]

[0042] (1) The intermediates hexanitrotriptycene and hexaaminotriptycene hydrochloride can be prepared according to literature (J.Org.Chem.2011, 76, 6389-6393).

[0043] (2) Add 1.1 g (8.27 mmol) of aluminum trichloride into anhydrous dichloromethane in an ice bath and keep stirring, then add 3.6 g (12 mmol) of N, N-di(4-methoxyphenyl) aniline ) in dichloromethane solution was added dropwise in the mixed solution, and finally oxalyl chloride 500mg (4.0mmol) was added dropwise in the mixed solution, and reacted overnight at room temperature. Extract with methyl chloride, wash with saturated brine, collect the organic phase, add anhydrous sodium sulfate to dry, remove the organic solvent under reduced pressure, separate and purify the obtained solid, and dry in vacuo to obtain 4-bis(4-methoxyphenyl ) Aminobenzil 1.6 g (yield: 61.5%). 1 H NMR (CDCl 3 , 600MHz): δ7...

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Abstract

The invention discloses preparation and application of a novel organic hole transport material taking triptycene tripyrazine as a core, and belongs to the field of perovskite solar cell application. The hole transport material is simple in synthetic route, low in cost, good in solubility, easy to purify and good in stability, and can be used as a hole transport material to be applied to planar perovskite solar cells. A planar perovskite solar cell prepared from the organic hole transport material taking triptycene tripyrazine as the core designed by the invention shows relatively high photoelectric conversion efficiency and good stability. The organic hole transport material with the triptycene tripyrazine as the core designed by the invention provides a new design thought for the hole transport material of a planar perovskite solar cell.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric functional materials, and in particular relates to an organic hole transport material with a triptyltripyrazine as a core, a preparation method thereof, and an application in planar perovskite solar cells. Background technique [0002] Perovskite solar cells have achieved rapid development in the past ten years, and the current laboratory record of photoelectric conversion efficiency has exceeded 25% (www.nrel.gov / pv / cell-efficiency.html). As an emerging solar power generation technology, perovskite solar cells have brought new hope to the technological transformation of the photovoltaic industry and have broad application prospects. As an important part of perovskite solar cells, the performance of the hole transport material (HTM) has an important impact on the photoelectric conversion efficiency and stability of the cell. The hole transport layer material that is easy to develop a...

Claims

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Application Information

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IPC IPC(8): C07D487/14H01L51/46H01L51/42H01L51/48
CPCC07D487/14H10K71/12H10K30/30Y02E10/549
Inventor 刘建吕光宇汪文源李小薇朱建军丁忠华
Owner NANJING FORESTRY UNIV