Organic electronic element comprising fullerene derivative

Patent metadata

Field	Value
Publication number	US-9711729-B2
Application number	US-201414888897-A
Country	US
Kind code	B2
Filing date	Apr 28, 2014
Priority date	May 7, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

The present specification relates to an organic electronic device including a fullerene derivative.

First claim

The invention claimed is:

1. An organic electronic device comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
one or more organic material layers provided between the first electrode and the second electrode,
wherein one or more layers of the organic material layers include a fullerene derivative represented by the following Chemical Formula 1:

wherein, in Chemical Formula 1,
n is an integer of 1 to 5,
when n is 2 or greater, structures within a parenthesis are the same as or different from each other,
Cn is fullerene of C 60 to C 120 ,
R3 and R4 are hydrogen, and
R1, R2, R5 and R6 are the same as or different from each other, each independently hydrogen; a cyano group; a substituted or unsubstituted alkyl group; or a substituted or unsubstituted ester group.

2. The organic electronic device of claim 1 ,
wherein at least one of R1, R2, R5 and R6 is

and
wherein R7 is a hydrogen; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted arylalkyl group having 7 to 50 carbon atoms; a substituted or unsubstituted heteroarylalkyl group having 2 to 60 carbon atoms; a substituted or unsubstituted carbonyl group having 1 to 40 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroring group having 2 to 60 carbon atoms, which includes one or more of N, O and S atoms.

3. The organic electronic device of claim 1 ,
wherein at least one of R1, R2, R5 and R6 is

and
wherein R7 is a hydrogen; or an alkyl group unsubstituted or substituted with substituents selected from the group consisting of a halogen group, an alkoxy group, polyethylene glycol, an aryl group, a crown ether group and a heteroring group including one or more of N, O and S atoms; or an aryl group unsubstituted or substituted with substituents selected from the group consisting of an alkyl group, a cyano group, a carbonyl group and an aldehyde group.

4. The organic electronic device of claim 1 , wherein the structure within the parenthesis in Chemical Formula 1 is represented by any one of the following chemical Formulae:

5. The organic electronic device of claim 1 , which is selected from the group consisting of an organic light emitting device; an organic solar cell; and an organic transistor.

6. The organic electronic device of claim 1 as an organic solar cell comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
one or more organic material layers provided between the first electrode and the second electrode,
wherein, one or more layers of the organic material layers include the fullerene derivative.

7. The organic electronic device claim 6 , wherein the organic material layer includes a photoactive layer; the photoactive layer has a bilayer structure including an n-type organic material layer and a p-type organic material layer; and the n-type organic material layer includes the fullerene derivative.

8. The organic electronic device claim 6 , wherein the organic material layer includes a photoactive layer; the photoactive layer includes an electron donor material and an electron acceptor material; and the electron acceptor material includes the fullerene derivative.

9. The organic electronic device of claim 8 , wherein the electron donor material and the electron acceptor material form a bulk heterojunction (BHJ).

10. The organic electronic device of claim 8 ,
wherein the electron donor material includes an organic compound; and the organic compound is an organic compound capable of being used in a solution process to form the photoactive layer, and
wherein the solution process includes spin coating, dip coating, screen printing, spray coating, doctor blade or brush painting.

11. The organic electronic device of claim 8 , wherein the electron donor material includes an organic compound; and the organic compound includes a polymer material or a unimolecular material.

12. The organic electronic device of claim 8 , wherein the electron acceptor material includes the fullerene derivative that is not heat-cured or UV-cured.

13. The organic electronic device of claim 8 , wherein the electron acceptor material includes the fullerene derivative that is heat-cured or UV-cured.

14. The organic electronic device of claim 6 , wherein the organic material layer includes a photoactive layer; and an organic material layer provided between the photoactive layer and the first electrode or the second electrode, wherein one or more layers of the photoactive layer and the organic material layer provided between the photoactive layer and the first electrode or the second electrode include the fullerene derivative.

15. The organic electronic device of claim 14 , wherein the organic material layer provided between the photoactive layer and the first electrode or the second electrode includes the fullerene derivative; and the fullerene derivative is an electron transfer material.

16. The organic electronic device of claim 14 , wherein the organic material layer provided between the photoactive layer and the first electrode or the second electrode includes a metal oxide layer; and an organic material layer provided between the metal oxide layer and the photoactive layer,
wherein the organic material layer includes the fullerene derivative.

17. The organic electronic device of claim 14 , wherein the organic material layer provided between the photoactive layer and the first electrode or the second electrode includes the fullerene derivative; and the fullerene derivative is an electron injection material.

Assignees

• Lg Chemical Ltd

Inventors

• Bae Jaesoon
• Choi Doo Whan
• Lee Jaechol
• Lee Jiyoung
• Choi Jeong Min
• Lee Hangken
• Kim Jinseck
• Jang Songrim
• Cho Keun

Classifications

• C09K2211/1416

  Condensed systems · CPC title

• C09K2211/1491

  containing other combinations of heteroatoms · CPC title

• C09K2211/1483

  containing nitrogen and sulfur as heteroatoms · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• C09K2211/1458

  containing sulfur as the only heteroatom · CPC title