Organic EL device and method of manufacturing the same

An organic electroluminescent device, comprising:

• a first electrode;
• an emission layer formed on the first electrode;
• an electron transport layer formed on the emission layer;
• and
• a second electrode formed on the electron transport layer,
• wherein the electron transport layer includes an electron transporting material and a carbon-based compound.

A method for manufacturing an organic electroluminescent device, comprising:

• forming a buffer layer comprising a carbon-based compound on a first electrode;
• forming an emission layer on the buffer layer;
• and
• forming a second electrode on the emission layer, wherein the buffer layer is about 0.1 nm to about 100 nm thick.