Active layer composition for solar cell, preparation method thereof and organic solar cell comprising the same
AssigneePusan National University Industry-University Cooperation Foundation
InventorsSung Ho Jin, Jin Hwan Yoon, Ho Yeol Park
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Abstract
Disclosed are an active layer composition for a solar cell containing a two-dimensional conjugated polymer that has excellent thermal/chemical stability and may improve power conversion efficiency of an organic solar cell via realization of high open-circuit voltage and short-circuit current, a preparation method of the composition, and an organic solar cell containing the composition. The composition contains a two-dimensional conjugated polymer having a repeating unit represented by a following Chemical Formula 4-2 as an electron donor material: wherein the Chemical Formula 4-2, n is an integer of 5 to 2000.
Claims8
An active layer composition for a solar cell, the active layer composition comprising:
- 5000 to 50000 parts by weight of an organic solvent;
- 10 to 300 parts by weight of an electron acceptor material, based on 100 parts by weight of a two-dimensional conjugated polymer;
- and
- the two-dimensional conjugated polymer containing a repeating unit represented by a following Chemical Formula 2 as an electron donor material:
- wherein in the Chemical Formula 2, each of Y1 and Y2 are Cl;
- wherein each of R1 and R2 independently represents a substituted or unsubstituted alkylene having 9 to 30 carbon atoms;
- wherein n is an integer of 5 to 2000;
- and
- wherein the active layer has a ternary junction with the electron donor material and at least two types of non-fullerene-based electron acceptor materials mixed with each other, wherein the two types of non-fullerene-based electron acceptor materials are selected from IT-4F and BTP-4F, or IT-4F and BTP-4Cl.
Dependencies are inferred from the claim text.