Copolymer and organic solar cell comprising same

Patent metadata

Field	Value
Publication number	US-2016181536-A1
Application number	US-201414908979-A
Country	US
Kind code	A1
Filing date	Jul 31, 2014
Priority date	Jul 31, 2013
Publication date	Jun 23, 2016
Grant date	—

Abstract

The present specification provides a copolymer and an organic solar cell including the same.

First claim

1 . A copolymer comprising:
a first monomer represented by the following Formula 1; a second monomer that acts as an electron donor; and a third monomer that acts as an electron acceptor:

in Formula 1,
a and b are each an integer of 1 to 5,
R1 is the same or different when a is an integer of 2 to 5,
R2 is the same or different when b is an integer of 2 to 5, and
R1 to R4 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; an imide group; an amide group; a hydroxyl group; a substituted or unsubstituted carbonyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted boron group; a substituted or unsubstituted alkylamine group; a substituted or unsubstituted aralkylamine group; a substituted or unsubstituted arylamine group; a substituted or unsubstituted heteroarylamine group; a substituted or unsubstituted aryl group; and a substituted or unsubstituted heterocyclic group.

2 . The copolymer of claim 1 , wherein R1 and R2 are the same as or different from each other, and are each independently a substituted or unsubstituted alkoxy group; or a substituted or unsubstituted alkyl group.

3 . The copolymer of claim 1 , wherein the first monomer represented by Formula 1 is represented by the following Formula 2:

in Formula 2,
R1 to R4 are the same as those defined in Formula 1.

4 . The copolymer of claim 1 , wherein the second monomer that acts as an electron donor comprises at least one of the following Formulae:

in the Formulae,
c is an integer of 1 to 4,
d is an integer of 1 to 6,
e is an integer in the range of 1 to 8,
f and g are each an integer of 1 to 3,
R10 is the same or different when c, d, e, and f are 2 or more,
R11 is the same or different when g is 2 or more,
R10 and R11 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; an imide group; an amide group; a hydroxyl group; a substituted or unsubstituted carbonyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted boron group; a substituted or unsubstituted alkylamine group; a substituted or unsubstituted aralkylamine group; a substituted or unsubstituted arylamine group; a substituted or unsubstituted heteroarylamine group; a substituted or unsubstituted aryl group; and a substituted or unsubstituted heterocyclic group,
X1 to X3 are the same as or different from each other, and are each independently selected from the group consisting of CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, and Te, Z is selected from the group consisting of CRR′, O, SiRR′, PR, S, GeRR′, Se, and Te,
Y1 and Y2 are the same as or different from each other, and are each independently selected from the group consisting of CR, N, SiR, P, and GeR, and
R and R′ are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; an imide group; an amide group; a hydroxyl group; a substituted or unsubstituted carbonyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted boron group; a substituted or unsubstituted alkylamine group; a substituted or unsubstituted aralkylamine group; a substituted or unsubstituted arylamine group; a substituted or unsubstituted heteroarylamine group; a substituted or unsubstituted aryl group; and a substituted or unsubstituted heterocyclic group.

5 . The copolymer of claim 1 , wherein the third monomer that acts as an electron acceptor comprises at least one of the following Formulae:

in the Formulae,
R12 to R15 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; an imide group; an amide group; a hydroxyl group; a substituted or unsubstituted carbonyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted boron group; a substituted or unsubstituted alkylamine group; a substituted or unsubstituted aralkylamine group; a substituted or unsubstituted arylamine group; a substituted or unsubstituted heteroarylamine group; a substituted or unsubstituted aryl group; and a substituted or unsubstituted heterocyclic group,
X4 and X5 are the same as or different from each other, and are each independently selected from the group consisting of CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, and Te,
Y3 to Y6 are the same as or different from each other, and are each independently selected from the group consisting of CR, N, SiR, P, and GeR, and
R and R′ are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; an imide group; an amide group; a hydroxyl group; a substituted or unsubstituted carbonyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted a

Assignees

• Lg Chemical Ltd

Inventors

• Kim Jinseck
• Lee Jaechol
• Cho Keun
• Lee Hangken
• Jang Songrim
• Choi Doowhan

Classifications

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• H10K85/113

  Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene · CPC title

• C08G61/122 Primary

  derived from five- or six-membered heterocyclic compounds, other than imides · CPC title

• H10F77/12

  Active materials · CPC title

• H10F19/00

  Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules · CPC title