Single molecule solid state light emitting electrochemical cells with lifetimes superior to 3000 hours

Rubén D. Costa, Henk J. Bolink, Enrique Ortí, Michele Sessolo, Stefan Graber, Kevin Doyle, Markus Neuburger, Catherine E. Housecraft, Edwin C. Constable

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

1 Zitat (Scopus)

Abstract

We will present a breakthrough in the stability of the simplest light-emitting electrochemical cells (LECs). The main drawback of these molecular devices limiting their practical use are their short lifetimes, which range from several minutes to a few days due to intrinsic instabilities of the ionic transition-metal complex (iTMC's). By using an ionic iridium(III) complex conveniently designed to form a supramolecularly-caged structure, we show that the lifetime of LECs can be increased to more than 3000 hours at an average luminance of 200 cd m-2 while operating at a bias of only 3 volts. In order to reduce the turn-on time to a few minutes small amount of ionic liquid (IL) were added and short pulses of higher-voltage were applied at the start.

OriginalspracheEnglisch
TitelOrganic and Hybrid Materials for Large-Area Functional Systems
Seiten61-67
Seitenumfang7
PublikationsstatusVeröffentlicht - 2008
Extern publiziertJa
Veranstaltung2008 MRS Fall Meeting - Boston, MA, USA/Vereinigte Staaten
Dauer: 1 Dez. 20085 Dez. 2008

Publikationsreihe

NameMaterials Research Society Symposium Proceedings
Band1114
ISSN (Print)0272-9172

Konferenz

Konferenz2008 MRS Fall Meeting
Land/GebietUSA/Vereinigte Staaten
OrtBoston, MA
Zeitraum1/12/085/12/08

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