Hepp, Aline and Ulrich, G. and Schmechel, Roland and Seggern, Heinz von and Ziessel, R. (2004):
Highly efficient energy transfer to a novel organic dye in OLED devices.
In: Synthetic metals, 146 (1), pp. 11-15. Elsevier Science Publishing, [Article]
Abstract
The neutral 4,4-difluoro-8-(2,2′:6′,2″-terpyridine-4′-yl)-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene (Boditerpy) molecule was synthesized and incorporated as dopant (<1%) in double-layer organic light emitting diodes (OLEDs) with the configuration ITO/α-NPD(60 nm)/Alq3(60 nm):Boditerpy (0.4 nm)/LiF(0.02 nm)/Al(80 nm). This device exhibits green emission with a brightness of 545 cd/m2 at 8 V and a maximum power efficiency of 0.9 lm/W. A full quantitative energy transfer process is indicated by a complete quenching of light emission from Alq3 in photoluminescence. However, I–V characteristics indicate some losses during the charge transfer processes in OLED configuration
| Item Type: | Article |
|---|---|
| Erschienen: | 2004 |
| Creators: | Hepp, Aline and Ulrich, G. and Schmechel, Roland and Seggern, Heinz von and Ziessel, R. |
| Title: | Highly efficient energy transfer to a novel organic dye in OLED devices |
| Language: | English |
| Abstract: | The neutral 4,4-difluoro-8-(2,2′:6′,2″-terpyridine-4′-yl)-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene (Boditerpy) molecule was synthesized and incorporated as dopant (<1%) in double-layer organic light emitting diodes (OLEDs) with the configuration ITO/α-NPD(60 nm)/Alq3(60 nm):Boditerpy (0.4 nm)/LiF(0.02 nm)/Al(80 nm). This device exhibits green emission with a brightness of 545 cd/m2 at 8 V and a maximum power efficiency of 0.9 lm/W. A full quantitative energy transfer process is indicated by a complete quenching of light emission from Alq3 in photoluminescence. However, I–V characteristics indicate some losses during the charge transfer processes in OLED configuration |
| Journal or Publication Title: | Synthetic metals |
| Journal volume: | 146 |
| Number: | 1 |
| Publisher: | Elsevier Science Publishing |
| Uncontrolled Keywords: | OLEDs, Alq3, α-NPD, Boditerpy dyes, Energy transfer |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Electronic Materials |
| Date Deposited: | 20 Nov 2008 08:19 |
| Official URL: | http://www.sciencedirect.com/science/article/pii/S0379677904... |
| Identification Number: | doi:10.1016/j.synthmet.2004.06.016 |
| License: | [undefiniert] |
| Funders: | The authors are grateful to the European Union for financial support through the EU-FET-IST project ILO #IST-2001-33057. |
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