Organic light-emitting device and method of manufacturing the same

An organic light-emitting device comprising:

• a substrate;
• a first electrode formed on the substrate;
• a second electrode;
• an emission layer between the first electrode and the second electrode;
• a hole transport layer between the first electrode and the emission layer, the hole transport layer comprising a first hole transport unit comprising:
• a first hole transport layer comprising a hole transporting material;
• a third hole transport layer formed on the first hole transport layer and comprising a charge generating material;
• and a fifth hole transport layer formed on the third hole transport layer and comprising the hole transporting material, each hole transport material independently selected from the group consisting of compounds represented by Formulae 1 and 2 and a combination thereof, each charge generating material independently represented by Formula 3:
• wherein R10 is represented by —(Ar1)n—Ar2;
• R16 is represented by —(Ar11)m—Ar12;
• Ar1, Ar11, L1, and L11 are each independently selected from the group consisting of a substituted or unsubstituted C1-C30 alkylene group, a substituted or unsubstituted C2-C30 alkenylene group, a substituted or unsubstituted C5-C30 arylene group, a substituted or unsubstituted C4-C30 heteroarylene group, and —N(Q1)-;
• n, m, a, and b are each independently an integer from 0 to 10;
• R1 through R3, R11 through R15, R17, R18, R21 through R29, Ar2, Ar12, and Q1 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C2-C30 alkynyl group, a substituted or unsubstituted C1-C30 alkoxy group, a substituted or unsubstituted C1-C30 alkylthiol group, a substituted or unsubstituted C5-C30 aryl group, a substituted or unsubstituted C4-C30 heteroaryl group, and —N(Q2)(Q3);
• and
• Q2 and Q3 are each independently a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C2-C30 alkynyl group, a substituted or unsubstituted C1-C30 alkoxy group, a substituted or unsubstituted C1-C30 alkylthiol group, a substituted or unsubstituted C5-C30 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group, wherein n groups of Ar1 in —(Ar1)n— may be identical to or different from each other, m groups of Ar11 in —(Ar11)m— may be identical to or different from each other, a groups of L1 in -(L1)a- may be identical to or different from each other, and b groups of L11 in -(L11)b- may be identical to or different from each other;
• R51 to R56 are each independently selected from the group consisting of a hydrogen atom, —CN, —SOR100, —SON(R101)2, —SO2R102, —SO2N(R103)2, —SO3R104, —SO3N(R105)2, —NO2, —CFH2, —CF2H, and —CF3, and R100 to R105 are each independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C5-C30 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group;
• and
• an electron transport layer between the second electrode and the emission layer, the electron transport layer comprising an electron transporting material and a metal-containing material.

A method of manufacturing an organic light-emitting device, the method comprising:

• forming a first electrode on a substrate;
• forming a hole transport layer on the first electrode by forming a first hole transport unit, the first hole transport unit comprising a first hole transport layer comprising a hole transporting material;
• a third hole transport layer formed on the first hole transport layer and comprising a charge generating material;
• and a fifth hole transport layer formed on the third hole transport layer and comprising the hole transporting material;
• forming an emission layer on the hole transport layer;
• forming an electron transport layer comprising an electron transporting material and a metal-containing material on the emission layer;
• and
• forming a second electrode on the electron transport layer.