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Highly efficient energy transfer to a novel organic dye in OLED devices

Hepp, Aline ; Ulrich, G. ; Schmechel, Roland ; Seggern, Heinz von ; Ziessel, R. :
Highly efficient energy transfer to a novel organic dye in OLED devices.
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S0379677904...]
In: Synthetic metals, 146 (1) pp. 11-15.
[Artikel], (2004)

Offizielle URL: http://www.sciencedirect.com/science/article/pii/S0379677904...

Kurzbeschreibung (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

Typ des Eintrags: Artikel
Erschienen: 2004
Autor(en): Hepp, Aline ; Ulrich, G. ; Schmechel, Roland ; Seggern, Heinz von ; Ziessel, R.
Titel: Highly efficient energy transfer to a novel organic dye in OLED devices
Sprache: Englisch
Kurzbeschreibung (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

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Synthetic metals
Band: 146
(Heft-)Nummer: 1
Verlag: Elsevier Science Publishing
Freie Schlagworte: OLEDs, Alq3, α-NPD, Boditerpy dyes, Energy transfer
Fachbereich(e)/-gebiet(e): Fachbereich Material- und Geowissenschaften > Materialwissenschaften > Elektronische Materialeigenschaften
Fachbereich Material- und Geowissenschaften > Materialwissenschaften
Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 20 Nov 2008 08:19
Offizielle URL: http://www.sciencedirect.com/science/article/pii/S0379677904...
ID-Nummer: 10.1016/j.synthmet.2004.06.016
Sponsoren: 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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