TITLE

Highly efficient electrophosphorescence devices based on rhenium complexes

AUTHOR(S)
Feng Li; Ming Zhang; Cheng, Gang; Feng, Jing; Zhao, Yi; Ma, Yuguang; Liu, Shiyong; Shen, Jiacong
PUB. DATE
January 2004
SOURCE
Applied Physics Letters;1/5/2004, Vol. 84 Issue 1, p148
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Highly efficient electrophosphorescence from light-emitting devices based on two types of rhenium(I) diimine complexes, (1,10-phenanthroline)Re(CO)[sub 3]Cl (phen-Re) and (2,9-dimethyl-1,10-phenanthroline)Re(CO)[sub 3]Cl (dmphen-Re), is reported. N, N[sup ′]-di-1-naphthyl-N, N[sup ′]-diphenylbenzidine is used as the hole-transporting layer. 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline is used to confine excitons within the luminescence zone. phen-Re and dmphen-Re are doped into the host material (4,4[sup ′]-N-N[sup ′]-dicarbazole)biphenyl with mass ratios of 2–20% as the light-emitting layer, respectively. The maximum efficiency and brightness achieved from the devices based on phen-Re and dmphen-Re are 6.67 cd/A and 2769 cd/m[sup 2], and 7.15 cd/A and 3686 cd/m[sup 2], respectively. © 2004 American Institute of Physics.
ACCESSION #
11805650

 

Related Articles

  • HIGH POWER WHITE LIGHT EMITTING DIODES AND MODULES WITH LIGHT FLUX OF UP TO 1500 LUMEN. Gofshtein-Gardt, Alexei L.; Kogan, Lev. M.; Rassokhin, Igor. T.; Soshchin, Naum R.; Turkin, Andrei N. // Light & Engineering;2014, Vol. 22 Issue 3, p29 

    The article briefly notes the achievements of the authors in developing of super-power phosphor white light emitting diodes (with light flux of up to 900 lm) and of light-emitting diode modules (light flux of up to 1500 lm).

  • Efficient simple structure red phosphorescent organic light emitting devices with narrow band-gap fluorescent host. Tae Jin Park; Woo Sik Jeon; Jung Joo Park; Sun Young Kim; Yong Kyun Lee; Jin Jang; Jang Hyuk Kwon; Pode, Ramchandra // Applied Physics Letters;3/17/2008, Vol. 92 Issue 11, p113308 

    Using a narrow band-gap fluorescent host material, bis(10-hydroxybenzo[h] quinolinato)beryllium complex, efficient red phosphorescent organic light emitting diodes (PHOLEDs) comprising two layers have been reported. Significantly low driving voltage of 4.5 V to reach a luminance of 1000 cd/m2 is...

  • Sidestepping the selection rules. Samuel, I.D.W.; Beeby, A. // Nature;2/17/2000, Vol. 403 Issue 6771, p710 

    Provides information on displays that use light-emitting diodes made up of thin layers of organic materials sandwiched between suitable contacts. Occurrence of light emission in organic materials; Involvement of various electronic configurations in light emission processes such as phosphorescence.

  • Blue phosphorescent dye as sensitizer and emitter for white organic light-emitting diodes. Gangtie Lei; Liduo Wang; Yong Qiu // Applied Physics Letters;11/29/2004, Vol. 85 Issue 22, p5403 

    We demonstrate high-efficiency white organic light-emitting diodes with blue electrophosphorescent and red phosphor-sensitized electrofluorescent emission. The phosphorescent dye, bis[(4,6-difluorophenyl)-pyridinato-N,C2] (picolinato) Ir(III) (FIrpic) and the fluorescent dye,...

  • Reduced efficiency roll-off in phosphorescent organic light emitting diodes at ultrahigh current densities by suppression of triplet-polaron quenching. Zang, F. X.; Sum, T. C.; Huan, A. C. H.; Li, T. L.; Li, W. L.; Zhu, Furong // Applied Physics Letters;7/14/2008, Vol. 93 Issue 2, p023309 

    High-performance phosphorescent organic light emitting devices with reduced efficiency roll-off at ultrahigh current densities were realized. The devices were Ir(ppy)3-based phosphorescent organic light emitting diodes that employed...

  • Luminescence conversion of blue light emitting diodes. Schlotter, P.; Schmidt, R.; Schneider, J. // Applied Physics A: Materials Science & Processing;1997, Vol. 64 Issue 4, p417 

    Using blue-emitting GaN/6HSiC chips as primary light sources, we have fabricated green, yellow, red and white emitting LEDs. The generation of mixed colors, as turquoise and magenta is also demonstrated. The underlying physical principle is that of luminescence down-conversion (Stokes shift), as...

  • Optical, Structural and Electrical Study of Organic Light Emitting Diode (OLED)Based on MEH/PPV:C60 Composite. Sarjidan, M. A. Mohd; Madzalan, M. Z.; Majid, W. H. Abd // AIP Conference Proceedings;7/7/2010, Vol. 1250 Issue 1, p165 

    The influence of C60 on absorption, photoluminescence (PL) and luminescence properties of a single layer MEH/PPV:C60 organic light emitting diode has been investigated. The MEH/PPV molecules were mixed with 5 wt%, 20 wt% and 50 wt% of C60 and stirred in toluene. The emissive layer of OLED was...

  • Intramolecular energy transfer in heteroleptic red phosphorescent dopants. Jun Yeob Lee // Applied Physics Letters;11/27/2006, Vol. 89 Issue 22, p223517 

    Intramolecular energy transfer in heteroleptic red phosphorescent dopant materials with mixed ligand units in one molecule was studied. 1-phenylisoquinoline (piq) and phenylpyridine (ppy) moieties were introduced as ligands for Ir based phosphorescent dopants and light emission mechanism was...

  • Triplet host engineering for triplet exciton management in phosphorescent organic light-emitting diodes. Sung Hyun Kim; Jyongsik Jang; Kyoung Soo Yook; Jun Yeob Lee; Myoung-Seon Gong; Sangouk Ryu; Gee-keun Chang; Ho Jung Chang // Journal of Applied Physics;Mar2008, Vol. 103 Issue 5, p054502 

    The device performances of green phosphorescent organic light-emitting diodes with a triplet mixed host emitting layer were correlated with the energy levels and composition of the host materials. Two hole-transport-type host materials, (4,4′-N,N′-dicarbazole)biphenyl (CBP) and...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics