Optoelectronic device
An optoelectronic device including a first electrode, an active layer disposed on the first electrode, a second electrode disposed on the active layer, and a self-assembled monolayer interposed between the first electrode and the active layer, interposed between the active layer and the second electrode, or disposed inside the active layer, wherein the self-assembled monolayer includes a first compound and a second compound having different functional groups from each other.
1. An optoelectronic device comprising:
a first electrode;
an active layer disposed on the first electrode;
a second electrode disposed on the active layer; and
a self-assembled monolayer interposed between the first electrode and the active layer, interposed between the active layer and the second electrode, or disposed inside the active layer,
wherein the self-assembled monolayer comprises a first compound and a second compound having different functional groups from each other, and
wherein the first compound and the second compound are independently represented by the following Chemical Formulas 1 and 2:
*-A 1 -B 1 -X 1 Chemical Formula 1
*-A 2 -B 2 -X 2 Chemical Formula 2
wherein, in the above Chemical Formulas 1 and 2,
A 1 and A 2 are the same or different, and are independently selected from the group consisting of a thiol derivative, an alcohol derivative, and alkoxysilane derivative, a halosilane derivative, a carboxylic acid derivative, and a combination thereof,
B 1 and B 2 are the same or different, and are independently selected from the group consisting of a single bond, a substituted or unsubstituted C 1 to C 30 alkylene, a substituted or unsubstituted C 1 to C 30 alkenylene, a substituted or unsubstituted C 1 to C 30 alkynylene, a derivative thereof, and a combination thereof, and
X 1 and X 2 are functional groups that are different from each other, and are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C 1 to C 30 alkyl, a substituted or unsubstituted C 2 to C 30 alkenyl, a substituted or unsubstituted C 2 to C 30 alkynyl, a substituted or unsubstituted C 3 to C 30 cycloalkyl, a substituted or unsubstituted C 3 to C 30 cycloalkenyl, a substituted or unsubstituted C 5 to C 30 cycloalkynyl, a substituted or unsubstituted C 1 to C 30 alkoxy, a substituted or unsubstituted C 1 to C 30 carbonyl, a substituted or unsubstituted C 1 to C 30 carboxyl, a substituted or unsubstituted C 2 to C 30 (meth) acrylate, a substituted or unsubstituted C 2 to C 30 epoxy, a substituted or unsubstituted C 6 to C 30 aromatic group, a substituted or unsubstituted C 3 to C 30 heterocyclic group, a thiol, a hydroxy, an amine, a nitro, a cyano, a halogen, a derivative thereof, and a combination thereof.
2. The optoelectronic device of claim 1 , wherein the active layer comprises a first active part disposed on the first electrode, and
a second active part disposed on the second electrode,
wherein the self-assembled monolayer is interposed between the first electrode and the first active part, interposed between the first active part and the second active part, or interposed between the second active part and the second electrode.
3. The optoelectronic device of claim 2 , wherein the first active part, the second active part, or a combination thereof comprises a fine pattern.
4. The optoelectronic device of claim 1 , wherein the active layer includes an electron donor and an electron acceptor.
5. The optoelectronic device of claim 4 , wherein the active layer further comprises a nanostructure, and the nanostructure contacts the first electrode or the second electrode.
6. The optoelectronic device of claim 1 , wherein X 1 and X 2 are different functional groups from each other, and are independently selected from the group consisting of n-octyl, acetoxy, acetyl, acryloxyethoxy, acryloxy, allylamino, allyl, allyloxy, amino, γ-aminopropyl, benzyl, benzyloxy, carbomethoxy, cyano, cyclopentadienyl, cyclopentyl, glycidoxy, methacryloxy, imidazole, methoxyphenyl, methylamino, methylpropenyl, naphthyl, phenyl, phenoxy, phenylacetoxy, phenylamino, pyridine, pyrrole, tolyl, thiol, vinyl, fluoro, trifluoromethyl, pentafluoroethyl, tridecafluorohexyl, heptadecafluorooctyl, heptadecafluoro-1,1,2,2-tetrahydrodecyl, chloro, bromo, bromophenyl, bromovinyl, iodo, a derivative thereof, and a combination thereof.
7. The optoelectronic device of claim 1 , wherein X 1 is a hydrophilic functional group and X 2 is a hydrophobic functional group.
8. The optoelectronic device of claim 7 , wherein X 1 is a functional group selected from the group consisting of an amine, a carboxyl, an epoxy, a thiol, a (meth)acrylate, a derivative thereof, and a combination thereof.
9. The optoelectronic device of claim 7 , wherein X 2 is a functional group selected from the group consisting of —CH 3 , —OCH 3 , a fluorinated derivative thereof, a derivative thereof, and a combination thereof.
10. The optoelectronic device of claim 1 , wherein X 1 is an electron-donating functional group and X 2 is an electron-withdrawing functional group.
11. The optoelectronic device of claim 10 , wherein X 1 is a functional group selected from the group consisting of —NH 2 , —OCH 3 , —CH 3 , a derivative thereof, and a combination thereof.
12. The optoelectronic device of claim 10 , wherein X 2 is a functional group selected from the group consisting of —NO 2 , —CN, —F, —Br, —SH, a derivative thereof, and a combination thereof.
13. The optoelectronic device of claim 1 , wherein the optoelectronic device is a solar cell or an organic light emitting diode.