Electroluminescent properties of functional p-electron molecular systems
| Autor: | Zakya H. Kafafi, Yasuhiro Iizumi, Junji Kido, Hedi Mattoussi, Charles D. Merritt, Hideyuki Murata, Lisa C. Picciolo |
|---|---|
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Pure and Applied Chemistry. 71:2085-2094 |
| ISSN: | 1365-3075 0033-4545 |
| Popis: | Molecules with delocalized p-electrons possess attractive electroluminescent properties, and have been recently incorporated as the active emissive layers in organic light-emitting devices. In particular, electroluminescent molecular composites using a highly uorescent guest, with/without carrier trapping properties, and a host with dual luminescent and carrier transport properties are the focus of this study. Devices based on these luminescent functional p-electron molecular systems exhibited high electroluminescence quantum ef®ciency, and good thermal and temporal stability, with ease of color tunability. The paper discusses the mechanisms of light-emission that lead to superior performance in these molecular devices. Ef®cient FoErster energy transfer from the host to the guest molecules, and direct carrier recombination at the highly uorescent guest molecules are proposed as the two mechanisms responsible for high ef®ciency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|