Abstract
We present the first evidence of charge injection improvement in an organic electroluminescent device provided by a single ionic molecular layer. A hole-dominated, hybrid organic-inorganic light-emitting device is used as a probe to verify the effectiveness of the ionic compound monolayer on modifying the metal oxide cathode. The rearrangement of ions under an applied bias induces a strong field at the electrode-organic interface resulting in an enhancement of the electron injection into the organic semiconductor. A strong decrease in turn-on voltage for electroluminescence is observed for the device containing the ionic molecular monolayer.
Original language | English |
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Pages (from-to) | 79-83 |
Number of pages | 5 |
Journal | Langmuir |
Volume | 25 |
Issue number | 1 |
DOIs | |
Publication status | Published - 6 Jan 2009 |
ASJC Scopus subject areas
- Electrochemistry
- Condensed Matter Physics
- Surfaces and Interfaces
- General Materials Science
- Spectroscopy