Transparent electrode and organic electronic device including the same
A transparent electrode has excellent adhesion between a substrate and a conductive layer. A transparent electrode includes a substrate, an underlying layer, and a conductive layer sequentially stacked. The underlying layer contains at least one selected from a compound having a thiol group and a poly(meth)acrylate and a poly(meth)acrylamide each having an aminoethyl group.
1. A transparent electrode comprising, in a sequentially stacked manner: a substrate; an underlying layer; and an electrically conductive layer,
wherein the underlying layer contains at least one selected from the group consisting of a compound having a thiol group, a poly(meth)acrylate having an aminoethyl group, and a poly(meth)acrylamide having an aminoethyl group,
the electrically conductive layer includes a first electrically conductive layer formed of a metal thin wire having a specific pattern, and a second electrically conductive layer formed of a metal oxide,
the compound having the thiol group is substituted with an amine, ester, carboxylic acid, halogen or an extra thiol group, and
the transparent electrode has a sheet resistance of 5 Ω/sq. or less.
2. The transparent electrode according to claim 1 , wherein the compound having the thiol group is a condensation product of a compound having a structure represented by general formula (I) reacted with a monovalent or polyvalent alcohol, or reacted with an amine,
wherein, R 1 and R 2 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, where at least one of R 1 and R 2 is an alkyl group having 1 to 10 carbon atoms, m is an integer from 0 to 2 inclusive, and n is 0 or 1.
3. The transparent electrode according to claim 1 , wherein the poly(meth)acrylate having an aminoethyl group and the poly(meth)acrylamide having an aminoethyl group, each have a partial structure represented by general formula (II),
wherein, R 3 represents a hydrogen atom or a methyl group, Q represents —C(═O)O— or —C(═O)NRa—, where Ra represents a hydrogen atom or an alkyl group, and A represents a substituted or unsubstituted alkylene group, or —(CH 2 CHRbNH) x —CH 2 CHRb—, where Rb represents a hydrogen atom or an alkyl group, and x represents an average number of repeating units, being a positive integer.
4. The transparent electrode according to claim 1 , wherein the underlying layer contains a particle having a particle size in a range from 5 to 100 nm, the particle being formed of a titanium oxide or a zirconium oxide.
5. The transparent electrode according to claim 1 , wherein the underlying layer has a thickness in a range from 10 to 100 nm.
6. An organic electronic device comprising the transparent electrode according to claim 1 .
7. The organic electronic device according to claim 6 , wherein the organic electronic device is an organic electroluminescent device.
8. The transparent electrode according to claim 2 , wherein the underlying layer contains a particle having a particle size in a range from 5 to 100 nm, the particle being formed of a titanium oxide or a zirconium oxide.
9. The transparent electrode according to claim 2 , wherein the underlying layer has a thickness in a range from 10 to 100 nm.
10. An organic electronic device comprising the transparent electrode according to claim 2 .
11. The transparent electrode according to claim 3 , wherein the underlying layer contains a particle having a particle size in a range from 5 to 100 nm, the particle being formed of a titanium oxide or a zirconium oxide.
12. The transparent electrode according to claim 3 , wherein the underlying layer has a thickness in a range from 10 to 100 nm.
13. An organic electronic device comprising the transparent electrode according to claim 3 .
14. The transparent electrode according to claim 4 , wherein the underlying layer has a thickness in a range from 10 to 100 nm.