Patent ID: 6203933
Filing Date: 2001-03-20
Classification: C09B,H01L,Y10S

Abstract:
An organic electroluminescent element comprising:a light emitting layer which is a mixed layer comprising at least one hole-injecting and transporting compound and at least one electron-injecting and transporting compound as host materials, said layer containing 0.01 to 20 wt % of a compound of the formula (I) as a guest material:(Ar).sub.m -L (I)wherein Ar is selected from the group consisting of arylalkynyl arylphenyl and aminophenyl, m is an integer of 2 to 6, the Ar groups may be the same or different, and L is a m-valent residue of a condensed polycyclic aromatic compound having 3 to 10 rings, with the proviso that where L is a di- or trivalent residue derived from anthracene, at least one Ar is an aromatic residue derived from an alkynylarene;b) at least one hole-injecting and transporting layer;c) at least one electron-injecting and transporting layer; andd) electrodes.