Conjugated polymer and application thereof

Patent metadata

Field	Value
Publication number	US-11299581-B2
Application number	US-201916668782-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Oct 30, 2018
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

The present invention discloses a conjugated polymer, which is a random copolymer, and with Formula I:Additionally, the present invention also discloses an organic photovoltaic device comprising the conjugated polymer.

First claim

The invention claimed is:

1. A conjugated polymer, which is a random copolymer, with Formula I:

wherein

wherein R 1 is selected from the group consisting of C1-C30 alkyl, C1-C30 branched alkyl, C1-C30 silane, C1-C30 ester, C1-C30 alkoxy, C1-C30 alkylthio, C1-C30 haloalkyl, C1-C30 carbon chain containing double bond or triple bond, C1-C30 alkyl chain substituted by cyano, nitro, hydroxyl or keto, and halo group;
D1 and D2 are respectively selected from the group consisting of

A2 is selected from the group consisting of:

each π is independently selected from one of the following groups:

wherein R 1 , R 2 , R 3 and R 4 are independently selected from the group consisting of C1-C30 alkyl, C1-C30 branched alkyl, C1-C30 silane, C1-C30 ester, C1-C30 alkoxy, C1-C30 alkylthio, C1-C30 haloalkyl, C1-C30 carbon chain containing double bond or triple bond, C1-C30 alkyl chain substituted by cyano, nitro, hydroxyl or keto, and halo group;
wherein Ar 1 and Ar 2 are independently selected from the group consisting of fused aromatic hydrocarbons, benzene fused heterocylic compounds, fused heterocylic compounds, benzene, five-membered heterocyclic ring and six-membered heterocyclic ring, wherein the benzene, the five-membered heterocyclic ring and the six-membered heterocyclic ring comprise C1-C30 alkyl groups, C1-C30 branched alkane, C1-C30 silane, C1-C30 ester, C1-C30 alkoxy, C1-C30 alkylthio, C1-C30 haloalkyl, C1-C30 carbon chain containing double bond or triple bond, C1-C30 alkyl chain containing cyano, nitro, hydroxyl or keto, or halo group; and
m and n are any integers selected from 2 to 200, respectively.

2. The conjugated polymer of the claim 1 , wherein an optical energy gap of the conjugated polymer is in a range from 1.85 to 2.5 eV.

3. The conjugated polymer of the claim 1 , wherein at least one of the conditions of A1≠A2 and D1≠D2 is established.

4. The conjugated polymer of the claim 1 , wherein A1≠A2 and D1=D2.

5. An organic photovoltaic device comprising:
a first electrode;
a second electrode; and
an active layer material disposed between the first electrode and the second electrode, wherein the active layer material comprises a non-fullerene acceptor and a donor, and the donor is the conjugated polymer of the claim 1 .

6. The organic photovoltaic device of the claim 5 , wherein an optical energy gap of the non-fullerene acceptor is less than or equal to 1.7 eV.

7. The organic photovolt

Assignees

• Raynergy Tek Inc

Inventors

• Liao Chuang-Yi
• Li Wei-Long
• Lee Chia-Hao

Classifications

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• C08G2261/91

  Photovoltaic applications · CPC title

• C08G2261/122

  statistical · CPC title

• C08G2261/149

  Side-chains having heteroaromatic units · CPC title

• C08G2261/3243

  containing one or more sulfur atoms as the only heteroatom, e.g. benzothiophene · CPC title