COMPOSITION FOR ORGANIC LAYER OF ORGANIC SOLAR CELL AND METHOD FOR MANUFACTURING ORGANIC SOLAR CELL USING SAME

• US 20200136050A1
• Filed: 03/07/2019
• Published: 04/30/2020
• Est. Priority Date: 03/09/2018
• Status: Abandoned Application

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: CHOI, Doowhan, LEE, Jiyoung, JANG, Songrim, LIM, Bogyu
• Application Number:
  US16/619,531
• Publication Number:
  US 20200136050A1
• Time in Patent Office: Days
• CPC Class Codes: H01L 31/0256 characterised by the material
• CPC Class Codes: H10K 30/30 comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
• CPC Class Codes: H10K 30/50 Photovoltaic [PV] devices
• CPC Class Codes: H10K 30/81 Electrodes
• CPC Class Codes: H10K 85/113 Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
• CPC Class Codes: H10K 85/151 Copolymers
• CPC Class Codes: H10K 85/656 comprising two or more different heteroatoms per ring H10K85/652 takes precedence
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6574 comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
• CPC Class Codes: H10K 85/6576 comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

The present specification relates to a composition for an organic material layer of an organic solar cell, the composition including: a polymer including a first unit represented by Formula 1, a second unit represented by Formula 2, a third unit represented by Formula 3 or 4; and a non-halogen-based solvent, a method for manufacturing an organic solar cell using the same, and an organic solar cell manufactured thereby.

Claims

1. A composition for an organic material layer of an organic solar cell, the composition comprising:

a polymer comprising a first unit of Formula 1, a second unit of Formula 2, and a third unit of Formula 3 or Formula 4; and

a non-halogen-based solvent;

2. The composition of claim 1, wherein the polymer is soluble in the non-halogen-based solvent in an amount of 1 mg or more per ml of the non-halogen-based solvent.

3. The composition of claim 1, wherein the non-halogen-based solvent comprises one or two or more selected from toluene, xylene, 2-methylanisole, ethylbenzene, trimethylbenzene, tolyl acetate, p-tolyl ether, and diphenyl ether.

4. The composition of claim 1, further comprising an electron acceptor.

5. The composition of claim 4, wherein the electron acceptor is a compound of Formula A:

6. The composition of claim 1, wherein the first unit is Formula 1-1:

7. The composition of claim 1, wherein the first unit is any one of Formulae 1-2 to 1-6:

8. The composition of claim 1, wherein the second unit is Formula 2-1:

9. The composition of claim 1, wherein the third unit is any one of Formulae 3-3 to 3-7:

10. The composition of claim 1, wherein the polymer comprises a unit of Formula 5:

11. The composition of claim 1, wherein the polymer comprises a unit of Formula 5-1 or 5-2:

12. The composition of claim 1, wherein the polymer comprises a unit of Formula 5-3:

13. The composition of claim 1, wherein the polymer comprises a unit of any one of Formulae 5-4 to 5-39:

14. A method for manufacturing an organic solar cell, the organic solar cell comprising:

a first electrode;

a second electrode on the first electrode; and

an organic material layer comprising one or more layers, wherein the organic material layer is between the first electrode and the second electrode and comprises a photoactive layer, and

wherein the one or more layers of the organic material layer are formed by using the composition of claim 1.

15. An organic solar cell comprising:

a first electrode;

a second electrode on the first electrode; and

an organic material layer comprising one or more layers, wherein the organic material layer is between the first electrode and the second electrode and comprises a photoactive layer, and

wherein the one or more layers of the organic material layer are formed by using the composition of claim 1.

16. The composition of claim 1, wherein the second unit is Formula 2-2:

17. The composition of claim 13, wherein l is 0.5, and m is 0.5.