Method for manufacturing organic solar cell and organic solar cell manufactured by using the same

Patent metadata

Field	Value
Publication number	US-11038114-B2
Application number	US-201916493324-A
Country	US
Kind code	B2
Filing date	Feb 27, 2019
Priority date	Mar 6, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A method for manufacturing an organic solar cell according to an exemplary embodiment of the present application comprises: preparing a substrate; forming a first electrode on the substrate; forming a photoactive layer on the first electrode; drying the photoactive layer with a wind force of 0.01 Mpa to 0.07 Mpa; and forming a second electrode on the photoactive layer.

First claim

What is claimed is:

1. A method for manufacturing an organic solar cell, the method comprising:
providing a substrate;
forming a first electrode on the substrate;
forming a photoactive layer on the first electrode, wherein the forming of the photoactive layer is performed by using a slot die, a bar coater, a doctor blade, or dip coating;
drying the photoactive layer with a wind force in a range of 0.01 Mpa to 0.07 Mpa; and
forming a second electrode on the photoactive layer.

2. The method of claim 1 , wherein the photoactive layer comprises an electron donor and an electron acceptor, the electron donor comprises a single molecular compound, and the electron acceptor comprises a fullerene-based compound.

3. The method of claim 2 , wherein the single molecular compound comprises a compound of Formula 1:

wherein:
m1, m2, n1, and n2 are each an integer from 1 to 3;
when m1, m2, n1, and n2 are each 2 or more, two or more structures in the square bracket are the same as or different from each other;
L2 and L3 are the same as or different from each other, and are each independently a direct bond or a divalent linking group;
R1 to R12 and R21 to R28 are the same as or different from each other, and are each independently hydrogen, deuterium, a halogen group, a nitrile group, a nitro group, an imide group, an amide group, a hydroxyl 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, or a substituted or unsubstituted heterocyclic group comprising one or more of N, O, and S atoms;
G1 and G2 are the same as or different from each other, and are each independently a substituted or unsubstituted branched alkyl group; and
A1 and A2 are the same as or different from each other, and are each independently a structure which acts as an electron acceptor.

4. The method of claim 2 , wherein the single molecular compound comprises a compound of Formula 2:

wherein:
n1 to n4 are each an integer from 1 to 3;
when n1 to n4 are each 2 or more, two or more structures in the parenthesis are the same as or different from each other;
X1 to X4 are the same as or different from each other, and are each independently CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te;
Y1 to Y4 are the same as or different from each other, and are each independently CR″, N, SiR″, P, or GeR″;
R, R′, R″, R1 to R8, and R10 to R13 are the same as or different from each other, and are each independently hydrogen, deuterium, a halogen group, a nitrile group, a nitro group, an imide group, an amide group, a hydroxyl 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, or a substituted or unsubstituted heterocyclic group;
[Push] has a structure which acts as an electron donor, and the structure is any one of the following structures;

c and c′ are each an integer from 1 to 3;
when c is 2 or more, two or more R100 are the same as or different from each other;
when c′ is 2 or more, two or more R101 are the same as or different from each other;
X10 to X13 are the same as or different from each other, and are each independently CRaRb, NRa, O, SiRaRb, PRa, S, GeRaRb, Se, or Te;
Ra, Rb, and R100 to R103 are the same as or different from each other, and are each independently hydrogen, deuterium, a halogen group, a nitrile group, a nitro group, an imide group, an amide group, a hydroxyl 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, or a substituted or unsubstituted heterocyclic group;
Ar1 and Ar2 are the same as or different from each other, and are each independently any one of the following structures:

wherein:
a is an integer from 1 to 7;
b and c″ are each an integer from 1 to 4;
when a is 2 or more, two or more R15 are the same as or different from each other;
when b is 2 or more, two or more R16 are the same as or different from each other;
when c″ is 2 or more, two or more R17 are the same as or different from each other; and
R14 to R20 are the same as or different from each other, and are each independently hydrogen, deuterium, a halogen group, a nitrile group a nitro group, an imide group an amide group a hydroxyl 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, or a substituted or unsubstituted heterocyclic group.

5. The method of claim 1 , wherein the photoactive layer comprises an electron donor and an electron acceptor, the electron donor comprises a polymer compound, and the electron acceptor comprises a n

Assignees

• Lg Chemical Ltd

Inventors

• Choi Doowhan
• Lee Jiyoung
• Jang Songrim
• Lim Bogyu
• Park Junghyun

Classifications

• H10K30/30

  comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains · CPC title

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• H10K30/20

  comprising organic-organic junctions, e.g. donor-acceptor junctions · CPC title

• H10K85/655

  comprising only sulfur as heteroatom · CPC title

• H10K71/12 Primary

  using liquid deposition, e.g. spin coating · CPC title