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A kind of a-d-d′-a type asymmetric organic photovoltaic acceptor material and its application

An A-D-D, organic photovoltaic technology, applied in organic chemistry, photovoltaic power generation, electric solid devices, etc., can solve problems such as E, and achieve the effect of simplifying molecular structure, simplifying synthesis, and balancing open-circuit voltage and short-circuit current.

Active Publication Date: 2022-05-31
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the low energy conversion efficiency and E loss Larger and other key issues, the present invention provides a class of A-D-D'-A type asymmetric small molecule acceptor materials with simple structure

Method used

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  • A kind of a-d-d′-a type asymmetric organic photovoltaic acceptor material and its application
  • A kind of a-d-d′-a type asymmetric organic photovoltaic acceptor material and its application
  • A kind of a-d-d′-a type asymmetric organic photovoltaic acceptor material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Synthesis of A-D-D'-A type small molecule acceptor materials based on alkoxyindenothiophene.

[0023]

Embodiment 2

[0047]

Embodiment 3

[0058] The EQE curve of PM6:SM4 is shown in Figure 4, under optimal conditions (1:5w / w; CF; 0.5% CN, 100°C thermal annealing and

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PUM

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Abstract

The invention belongs to the technical field of organic photovoltaics, in particular to a class of A-D-D'-A type asymmetric organic photovoltaic acceptor materials and applications thereof. Alkoxyindenothiophene and cyclopentadienodithiophene double-electron donor (D-D') units are used to jointly construct a skeleton containing non-covalent bond configuration locks, and 3-( Dicyanomethylene)inden-1-one modifies its terminus. Acceptors containing only simple fused rings have many advantages such as coplanar framework, low energy disorder and J-aggregation tendency, and the optical bandgap of such asymmetric small molecule acceptors is controllable in the range of 1.30-1.45eV tuned, can be combined with most donor materials to construct efficient bulk heterojunction binary organic solar cells. When the donor material is polymer PM6, the energy conversion efficiency of the binary OSCs device is as high as 13.67%, the open circuit voltage is 0.85eV, E loss Only 0.50V.

Description

A class of A-D-D'-A type asymmetric organic photovoltaic acceptor materials and their applications technical field The invention belongs to the technical field of organic photovoltaics, be specifically related to a class of structure is simple, based on A-D-D'-A type asymmetrical Organic photovoltaic acceptor materials and their applications in organic solar cells. Background technique [0002] The development of simple fused ring-like small molecule acceptor materials (number of fused rings ≤ 3) in organic solar cells obviously lags behind Large condensed ring type small molecule acceptor material (the number of condensed rings>3). Most reports of such materials are A‑D‑C‑D‑A with symmetric structure type small molecules, in which the D unit is mainly dithienocyclopentadiene (DTC). So far, based on such acceptor materials and The binary solar cell device efficiency when mixed with polymer donors such as PBDB‑T, PM6 or J52 is typically 10‑14%. But due to Compou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D495/04H01L51/42H01L51/46
CPCC07D495/04H10K85/615H10K85/6576H10K30/00Y02E10/549
Inventor 朱卫国朱佳宁谭华邵正勇朱梦冰王峻峰
Owner CHANGZHOU UNIV
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