| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of forming a phosphorescent OLED (an organic light-emitting diode) including a plurality of solution treatment layers by a treatment to make the solution treatment layers insoluble. <P>SOLUTION: The method of forming an organic light-emitting diode includes a step of providing a substrate containing a first electrode for injection of charge carriers of a first type, a step of forming a charge transport layer by depositing over the substrate a charge transport material for transporting charge carriers of the first type (here, the charge transport material is soluble in a solvent), a step of changing the charge transport layer insoluble in the solvent, a step of forming an electroluminescent layer by depositing onto the charge transport layer a composition containing the solvent, a phosphorescent material and a host material, and a step of depositing over the electroluminescent layer a second electrode for injection of charge carriers of a second type. <P>COPYRIGHT: (C)2011,JPO&INPIT |
