Conductive polymer ink composition and organic solar cell including the same

Patent metadata

Field	Value
Publication number	US-9966548-B2
Application number	US-201314010218-A
Country	US
Kind code	B2
Filing date	Aug 26, 2013
Priority date	May 11, 2012
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Provided are a conductive polymer ink composition including a) a water-based dispersion including a conductive polymer, b) a conductivity enhancer, c) a solvent, and d) a fluorine-based surfactant and a surfactant having a hydrophile-lipophile balance (HLB) of 12 or above, and an organic solar cell including the same.

First claim

What is claimed is:

1. A conductive polymer ink composition consisting essentially of:
a) a water-based dispersion including a conductive polymer;
b) a conductivity enhancer;
c) a solvent; and
d) a fluorine-based surfactant and a surfactant having a hydrophile-lipophile balance (HLB) of 12 or above,
wherein the fluorine-based surfactant comprises a perfluoroalkyl group in a main chain of a compound including a hydrophilic group or a lipophilic group;
wherein the surfactant having a hydrophile-lipophile balance (HLB) of 12 or above is a surfactant comprising the structure of polyoxyethylene expressed by Chemical Formula 2 below,
wherein a weight ratio of the fluorine-based surfactant to the surfactant having a HLB of 12 or above is within a range of 1:2 to 1:30,
wherein the solvent comprises water and an organic solvent, and the organic solvent comprises i) glycol ethers and ii) polyhydric alcohols, and
wherein a ratio of the water to the organic solvent is within a range of 40:60 to 90:10,
wherein the conductive polymer ink composition, based on 100 parts by weight of a total conductive polymer ink composition, consists essentially of a) 10 to 80 parts by weight of the water-based dispersion including a conductive polymer, b) 0.3 to 5 parts by weight of the conductivity enhancer, c) 35 to 89 parts by weight of the solvent, and d) 0.01 to 0.1 parts by weight of the fluorine-based surfactant and 0.3 to 1.5 parts by weight of the surfactant having a HLB of 12 or above, and
wherein a content of the conductive polymer in the water-based dispersion is in a range from 0.5 to 2 parts by weight based on 100 parts by weight of the water-based dispersion, and
wherein a content of the conductive polymer in the total conductive ink composition is in a range from 0.05 to 1.6 parts by weight based on 100 parts by weight of the total conductive polymer ink composition,

where R 1 and R 2 are respectively selected from the group consisting of hydrogen and an alkyl group having a carbon number of 1 to 12, at least one of R 1 and R 2 includes the alkyl group having a carbon number of 1 to 12, and p is an integer between 1 and 200.

2. The conductive polymer ink composition of claim 1 , wherein the organic solvent comprises i) 5 parts by weight to 95 parts by weight of the glycol ethers and ii) 5 parts by weight to 95 parts by weight of the polyhydric alcohols, based on 100 parts by weight of the organic solvent.

3. The conductive polymer ink composition of claim 1 , wherein the organic solvent further comprises iii) cyclohexanone.

4. The conductive polymer ink composition of claim 3 , wherein the organic solvent comprises i) 10 parts by weight to 50 parts by weight of the glycol ethers, ii) 5 parts by weight to 80 parts by weight of the polyhydric alcohols, and iii) greater than 0 to 10 parts by weight or less of the cyclohexanone, based on 100 parts by weight of the organic solvent.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Mi-Kyoung
• Yoo Jae-Hyun
• Kim Joon-Hyung
• Seong Jie-Hyun
• LEE Hang-Ken

Classifications

• H01L51/0007

  Electricity · mapped topic

• H01L51/441 Primary

  Electricity · mapped topic

• H01L51/442

  Electricity · mapped topic

• C09D11/10 Primary

  based on artificial resins · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title