POLYMER LIGHT-EMITTING ELEMENT

• Main Author: YAMAUCHI SHOGO
• Format: Patent
• Language: English
• Published: 28.07.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a polymer light-emitting element capable of improving brightness at the time of driving at low voltage. SOLUTION: In the polymer light-emitting element having a cathode, an anode, and a function layer including a polymer compound and a light-emitting layer including an organic polymer light-emitting compound between the cathode and the anode, the cathode has a first electrode layer and a second electrode layer in order from a light-emitting layer side, and the first electrode layer includes a first material and a second material. The first material is a material containing one kind or more of compounds selected from a group of sodium fluoride, potassium fluoride, cesium fluoride, rubidium fluoride, and carbonate of alkali metal, and the second material is a material which can accomplish reduction action to the first material. COPYRIGHT: (C)2011,JPO&INPIT