POLYMER BLEND, ORGANIC LIGHT EMITTING DIODES USING THE SAME AND METHOD FOR CONTROLLING CHARGE MOBILITY OF THE EMITTING LAYER OF THEREOF

摘要

PURPOSE: A polymer mixture controls hole mobility and electron mobility and improves the efficiency and lifetime of a light emitting diode. CONSTITUTION: A polymer mixture includes a first polymer having a unit represented by chemical formula 1 and a second polymer having a unit represented by chemical formula 2. An organic light-emitting diode (100) includes a first electrode (12); a second electrode facing the first electrode; and an organic layer inserted between the first electrode and the second electrode. The organic layer includes a light emitting layer (16) which includes the polymer mixture. A method for controlling the charge mobility of the light emitting layer of an organic light-emitting diode includes a step of controlling the composition ratio of the first polymer and the second polymer of the organic light-emitting diode.