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US 10,541,376 B2Granted
Organic solar cell and manufacturing method therefor
AssigneeLG Chem, Ltd.
InventorsHangken Lee, Songrim Jang, Jaechol Lee, Jiyoung Lee, Doowhan Choi, Jiwon Bang
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Abstract
The present specification relates to an organic solar cell and a method for manufacturing the same.
Claims20
An organic solar cell comprising:
- a first electrode;
- a second electrode facing the first electrode;
- two or more organic material layers comprising a photoactive layer and a fullerene layer between the first electrode and the second electrode;
- and
- a buffer layer that is between the first electrode and the photoactive layer or between the second electrode and the photoactive layer;
- wherein the fullerene layer comprises a fullerene derivative,
- a ratio of a hydrophilic substituent and a hydrophobic substituent which are bonded to the fullerene derivative is 1:0.01 to 1:0.5,
- the hydrophilic substituent comprises one or more selected from the group consisting of a hydroxy group, an indene group, a thiol group, a ketone group, a sulfonyl group, an amine group, an amino group, a phosphoric acid group, an ammonium group, and an ether group,
- the fullerene derivative is further bonded to one or more selected from the group consisting of an alkali metal ion and an alkaline earth metal ion, and
- the fullerene derivative is bonded to 3 to 50 hydroxy groups and 1 to 30 alkali metal ions or alkaline earth metal ions;
- wherein the buffer layer is physically bonded to and contacts the fullerene layer;
- and
- wherein the buffer layer comprises a first metal oxide.
10 more elements
A method for manufacturing an organic solar cell, the method comprising:
- providing a substrate;
- forming a first electrode on the substrate;
- forming two or more organic material layers on the first electrode, the two or more organic material layers comprising a photoactive layer and a fullerene layer;
- forming a second electrode on the two or more organic material layers;
- and
- forming a buffer layer comprising a first metal oxide before forming the fullerene layer,
- wherein the fullerene layer is physically bonded to the buffer layer,
- wherein the fullerene layer comprises a fullerene derivative,
- a ratio of a hydrophilic substituent and a hydrophobic substituent which are bonded to the fullerene derivative is 1:0.01 to 1:0.5,
- the hydrophilic substituent comprises one or more selected from the group consisting of a hydroxy group, an indene group, a thiol group, a ketone group, a sulfonyl group, an amine group, an amino group, a phosphoric acid group, an ammonium group, and an ether group,
- the fullerene derivative is further bonded to one or more selected from the group consisting of an alkali metal ion and an alkaline earth metal ion, and
- the fullerene derivative is bonded to 3 to 50 hydroxy groups and 1 to 30 alkali metal ions or alkaline earth metal ions.
9 more elements
An organic solar cell comprising:
- a first electrode;
- a second electrode facing the first electrode;
- a plurality of organic material layers comprising a photoactive layer and a fullerene layer between the first electrode and the second electrode;
- and
- a buffer layer that is physically bonded to and contacts the fullerene layer,
- wherein the fullerene layer comprises a fullerene derivative,
- wherein a ratio of a hydrophilic substituent and a hydrophobic substituent which are bonded to the fullerene derivative is 1:0.01 to 1:0.5,
- wherein the hydrophilic substituent comprises one or more selected from the group consisting of a hydroxy group, an indene group, a thiol group, a ketone group, a sulfonyl group, an amine group, an amino group, a phosphoric acid group, and an ammonium group,
- wherein the fullerene derivative is bonded to 3 to 50 hydroxy groups and 1 to 30 alkali metal ions or alkaline earth metal ions, and
- wherein the buffer layer comprises a metal oxide.
7 more elements
Dependencies are inferred from the claim text.