A kind of dimer small molecule electron donor material and its preparation method

A technology of electron donor materials and electron acceptor materials, applied in the field of solar cells, can solve the problems of low photoelectric conversion efficiency of solar cells, achieve huge application potential and value, improve photoelectric conversion efficiency, and good solubility
CN112830939BActive Publication Date: 2021-12-10CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Publication Date
2021-12-10

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Abstract

The invention belongs to the technical field of solar cells, and specifically discloses a dimer small molecule electron donor material and a preparation method thereof. The small molecule electron donor material contains a molecular structure as shown in formula (I). The dimer small molecule electron donor material of the present invention has good solubility, stability, photoelectricity and solution processability, and can be used as an electron donor material for all small molecule organic solar cells; BTR, the dimer small-molecule electron donor material of the present invention can form a more excellent phase-separated morphology with the small-molecule acceptor, especially the photoelectric conversion efficiency of the prepared all-small-molecule organic solar cell is significantly improved. The invention has great application potential and value in organic solar cells and related photovoltaic fields.
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Description

technical field

[0001] The invention relates to the technical field of solar cells, in particular to a dimer small molecule electron donor material and a preparation method thereof. Background technique

[0002] As a kind of flexible and printable solar cells, organic solar cells are composed of organic semiconductor materials as the core part of solar cells. They have the advantages of wide source of raw materials, good flexibility, solution processing, and printability. In recent years, organic solar cells have become one of the research hotspots in the industry. In the past two years, organic solar cells have developed rapidly. The photoelectric conversion efficiency of all small molecule organic photovoltaic devices using non-fullerenes as acceptor materials has exceeded 14%. Expensive and non-Fullerian organic solar cells are sensitive to film thickness, are not suitable for large-area printing applications, and are not suitable for market promotion.

[0003] The smal...

Claims

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