VOLTAGE-CONTROLLED COLOR VARIABLE LIGHT EMITTING DEVICE HAVING GOOD STABILITY AND THE PREPARATION THEREOF

摘要

The present invention relates to a color modulation organic electroluminescent device having excellent stability and a method for manufacturing the same. In an organic electroluminescent device including an anode transparent electrode, a hole transport layer, an organic light emitting layer, and an electron injection metal electrode, the hole transport layer is a hole transport layer. A material and a polyimide, wherein the light emitting layer comprises perylene and poly (etherimide). Since the organic electroluminescent device according to the present invention has a polymer / polymer double layer, it is chemically and physically very stable, and reliable coloration is possible by dispersing the light emitting material perylene in soluble poly (etherimide) and applying voltage. Color modulation is possible by adjustment.