Organic electroluminescence device, method for manufacturing the same, and display device including the same

A method for manufacturing an organic electroluminescence device, the method comprising:

• forming a first electrode;
• forming a hole transport region on the first electrode;
• forming a light emitting layer on the hole transport region;
• forming an electron transport region on the light emitting layer;
• and
• forming a second electrode on the electron transport region, wherein
• forming the electron transport region includes forming an electron transport layer directly on the light emitting layer, and
• forming the electron transport layer is performed by co-deposing a first component, the first component being a halide of any one of an alkali metal, an alkaline earth metal, or a lanthanide metal, and a second component, the second component being any one of an alkali metal, and alkaline earth metal, or a lanthanide metal.

An organic electroluminescence display device, comprising:

• a base substrate;
• a thin film transistor on the base substrate;
• and
• an organic electroluminescence device connected to the thin film transistor, wherein the organic electroluminescence device includes:
• a first electrode;
• a hole transport region on the first electrode;
• a light emitting layer on the hole transport region;
• an electron transport region on the light emitting layer;
• and
• a second electrode on the electron transport region, wherein
• the electron transport region includes an electron transport layer directly on the light emitting layer, and
• the electron transport layer includes a first ternary compound including a halogen element.