Molecularly "Engineered" Anode Adsorbates for Probing OLED Interfacial Structure-Charge Injection/Luminance Relationships

Large, Structure-Dependent Effects

Qinglan Huang, Guennadi Evmenenko, Pulak Dutta, Tobin J Marks

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Molecule-scale structure effects at organic light-emitting diodes (OLED) anode?organic transport layer interfaces are probed via a self-assembly approach. A series of ITO anode-linked silyltriarylamine molecules differing in aryl group and linker density are synthesized for this purpose and used to probe the relationship between nanoscale interfacial chemical structure, charge injection and electroluminescence properties. Dramatic variations in hole injection magnitude and OLED performance can be correlated with the molecular structures and electrochemically derived heterogeneous electron-transfer rates of such triarylamine fragments, placed precisely at the anode?hole transport layer interface. Very bright and efficient (∼70000 cd/m2 and ∼2.5% forward external quantum efficiency) OLEDs have thereby been fabricated.

Original languageEnglish
Pages (from-to)14704-14705
Number of pages2
JournalJournal of the American Chemical Society
Volume125
Issue number48
DOIs
Publication statusPublished - Dec 3 2003

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Charge injection
Organic light emitting diodes (OLED)
Adsorbates
Luminance
Anodes
Electrodes
Light
Injections
Molecules
Electroluminescence
Molecular Structure
Quantum efficiency
Self assembly
Molecular structure
Electrons

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Molecularly "Engineered" Anode Adsorbates for Probing OLED Interfacial Structure-Charge Injection/Luminance Relationships : Large, Structure-Dependent Effects. / Huang, Qinglan; Evmenenko, Guennadi; Dutta, Pulak; Marks, Tobin J.

In: Journal of the American Chemical Society, Vol. 125, No. 48, 03.12.2003, p. 14704-14705.

Research output: Contribution to journalArticle

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