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Micromolecule organic solar energy battery materials based on a heterocycle containing boron and nitrogen and a preparation method thereof

A technology of solar cells and small molecules, applied in organic chemistry, chemical instruments and methods, circuits, etc., can solve problems such as differences in properties of organic molecules, achieve good planar performance, improve conversion efficiency, and simple synthesis process

Active Publication Date: 2018-11-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can lead to significant differences in the properties of organic molecules

Method used

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  • Micromolecule organic solar energy battery materials based on a heterocycle containing boron and nitrogen and a preparation method thereof
  • Micromolecule organic solar energy battery materials based on a heterocycle containing boron and nitrogen and a preparation method thereof
  • Micromolecule organic solar energy battery materials based on a heterocycle containing boron and nitrogen and a preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Synthesis of Acceptor Materials Containing Boron Heterocycle BN-Ph

[0034] The synthesis steps are shown in the figure below. The previous synthesis work of this kind of small molecule acceptor material is the same. The borane substitution introduces different substituted phenyl groups, the bridging unit introduces different π units, and the Knoevenagel condensation reaction introduces different Electron-withdrawing groups, thereby producing small molecule acceptor materials with different band gaps and energy levels. Therefore, in the specific implementation case, Ar is the benzene ring, and the electron-withdrawing group A is 3-(dicyanomethylene) indigo-1 - Example of the synthesis of small molecule acceptor materials for ketones.

[0035]

[0036] The first step, by 2,5-dibromo-p-phenylenediamine as the raw material synthetic dibromoaniline substituted, as shown in the figure, the specific steps are: 2,5-dibromo-p-phenylenediamine (5g) is added to the In water t...

Embodiment 2

[0048] Taking the material obtained in Example 1 as an example to illustrate the application of such boron-nitrogen materials as small molecule acceptors in organic solar cell devices

[0049] The following example will illustrate the boron-nitrogen-containing heterocyclic small molecule organic solar material proposed in the present invention and its application process in organic photoelectric devices, but the present invention is not limited to the examples given.

[0050] The specific preparation process of the device is as follows:

[0051] Spin-coat a 40nm PEDOT:PSS hole transport layer on ITO, then spin-coat a PTB7-Th and BN-Ph SM blend photoactive layer of about 100nm, and then spin-coat an amino-based polyfluorene of about 5nm The quaternary ammonium bromide salt (PFN-Br) was used as the cathode interface layer, and then a 100 nanometer Ag layer was evaporated to complete the preparation of the device. The J-V curve test is carried out, and the relevant parameters of...

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Abstract

Micromolecule organic solar energy battery materials based on a heterocycle containing boron and nitrogen and a preparation method thereof are disclosed. The synthetic route includes (1) synthesizinga center structure containing a boron-nitrogen unit, (2) introducing a bridging unit through a Stille coupling reaction, and (3) introducing an electron withdrawing group through Knoevenagel condensation. The general structure formula of the materials is M, wherein Ar is an aromatic cyclic substitute, A is the electron withdrawing group, and Pi is the bridging unit. The materials (shown as M) havegood planarity, belong to a rare wide-band-gap donor structure and have a huge application prospect in the field of solar energy batteries, especially active layers.

Description

technical field [0001] The invention relates to a class of boron-nitrogen bond-containing organic semiconductor materials and a preparation method thereof. The series of materials belong to the technical field of photoelectric materials and applications, in particular small molecule materials for organic solar cells. Background technique [0002] Due to the advantages of light weight, flexibility and large-area processing, organic solar cells have attracted worldwide attention, and active layer materials have attracted the attention and research of a large number of scientists. In contrast, polymeric materials have the disadvantages of being batch-affected, insoluble, and difficult to purify. Small molecule materials have the advantages of tunable energy levels, simple synthesis, low processing cost, excellent solubility, and broad spectrum absorption, so they have received more and more attention. [0003] Boron is the element with the smallest atomic radius in the third m...

Claims

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Application Information

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IPC IPC(8): C07F5/02H01L51/42H01L51/46
CPCC07F5/02H10K85/655H10K85/657H10K30/00Y02E10/549
Inventor 段春晖庞淑婷黄飞曹镛
Owner SOUTH CHINA UNIV OF TECH
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