Spiro-configured bifluorenes: highly efficient UV-OLED emitter and host material for red electrophosphorescence
Journal
Organic Letters
Journal Volume
7
Journal Issue
23
Pages
5131-5134
Date Issued
2005-11
Author(s)
Abstract
[structure: see text] Remarkable UV OLED devices using novel spiro-configured bifluorenes as UV emitters have been successfully achieved with external quantum efficiencies up to 2.6-3.1% and emission wavelengths as short as 370 nm. In addition, these large-gap materials have been shown to be effective hosts for red phosphorescent emitters in phosphorescent OLEDs. This result represents the first example that pure hydrocarbon molecules can serve as an efficient host for red electrophosphorescence devices.
Type
journal article