Lichtemittierende Vorrichtung auf Polymerbasis

摘要

A polymer light emitting device at least having a light emitting layer containing a polymeric fluorescent substance and a charge transporting layer, wherein said polymeric fluorescent substance contains one or more kind of repeating units represented by the following formula (1), -Ar1-CR1=CR2- and said charge transporting layer contains an organic compound satisfying the following conditions 1 and 2 in an amount of from 1 to 70% by weight $$ $ (wherein\; EOX1\; and\; lambda\; edge1\; respectively\; represent\; an\; electrochemically\; determined\; oxidation\; potential\; and\; an\; absorption\; edge\; wavelength\; of\; an\; absorption\; spectrum\; of\; said\; organic\; compound;\; EOX2\; and\; lambda\; edge2\; respectively\; represent\; an\; electrochemically\; determined\; oxidation\; potential\; and\; an\; absorption\; edge\; wavelength\; of\; an\; absorption\; spectrum\; of\; said\; polymeric\; fluorescent\; substance\; used\; in\; said\; light\; emitting\; layer;\; and\; the\; unit\; in\; the\; condition\; 1\; is\; V\; and\; the\; unit\; in\; the\; condition\; 2\; is\; nm).\; The\; polymer\; light\; emitting\; device\; has\; a\; long\; and\; excellent\; stability\; on\; driving.$$$