title: Exciton-stimulated molecular transformation in organic light-emitting diodes.
abstract: An exciton-stimulated molecular transformation in an organic light-emitting diode (OLED) on a time scale of a few seconds under electrical bias is shown to reach nearly 100% under standard operating conditions, leading to color switching. It is reversible in both a thin film and an OLED when sufficient thermal energy is supplied. Such an exciton-stimulated molecular transformation suggests a new process which may be exploited for applications such as electrochromic and memory devices.
authors.affiliation: Department of Materials Science and Engineering, University of Toronto, 184 College St., Toronto Ontario, M5S 3E4, Canada.
authors.forename: Yi-Lu
authors.initials: YL
authors.lastname: Chang
authors.forename: Ying-Li
authors.initials: YL
authors.lastname: Rao
authors.forename: Shaolong
authors.initials: S
authors.lastname: Gong
authors.forename: Grayson L
authors.initials: GL
authors.lastname: Ingram
authors.forename: Suning
authors.initials: S
authors.lastname: Wang
authors.forename: Zheng-Hong
authors.initials: ZH
authors.lastname: Lu
keywords: exciton stimulated; excitons; isomerization; molecular transformation; organic light-emitting diodes (OLEDs)