| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1267532 | Organic Electronics | 2012 | 7 Pages |
The molecular design strategies for the host materials suitable for highly efficient, blue fluorescent organic light-emitting diodes (OLEDs) are demonstrated. The device characteristics of blue fluorescent OLEDs are compared with different host materials. Some devices exhibit a highly efficient blue electroluminescence with a high external quantum efficiency of more than 7%. The correlation between OLED efficiency and triplet–triplet annihilation is characterized by measuring the up-conversion of triplet excited states into singlet ones. The host materials require an anthracene unit and a bulky molecular structure to prevent the overlap of anthracene units between adjacent molecules in the film.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Molecular design strategies for the host materials suitable for efficient, blue fluorescent OLEDs. ► External quantum efficiency of over 7% in blue fluorescent OLEDs. ► Effect of excimer formation of host material on the efficiency of OLEDs.
