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

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルOrganic and Hybrid Materials for Large-Area Functional Systems
ページ61-67
ページ数7
出版ステータスPublished - 2008
外部発表はい
イベント2008 MRS Fall Meeting - Boston, MA, United States
継続期間: 2008 12 12008 12 5

出版物シリーズ

名前Materials Research Society Symposium Proceedings
1114
ISSN(印刷版)0272-9172

Conference

Conference2008 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period08/12/108/12/5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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