Molecular ionic junction for enhanced electronic charge transfer
| Autor: | Eugenio Coronado, Etienne Baranoff, Diego Repetto, Henk J. Bolink, Angel López-Muñoz, Md. K. Nazeeruddin, Miguel Clemente-León, Michele Sessolo |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Layer Ionic bonding 02 engineering and technology Electroluminescence 010402 general chemistry 01 natural sciences Ion chemistry.chemical_compound Self-Assembled Monolayers Oleds Monolayer Electrochemistry OLED General Materials Science Ionic compound High-Efficiency Spectroscopy Light-Emitting Devices business.industry Metal Self-assembled monolayer Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Organic semiconductor chemistry Chemical physics Optoelectronics 0210 nano-technology business Langmuir-Blodgett-Films |
| Zdroj: | Langmuir |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la803199s |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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