Linked Life Data

15852106

Source:http://linkedlifedata.com/resource/pubmed/id/15852106

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2005-4-26
pubmed:abstractText
This study reports substituent effects of iridium complexes with 1-phenylisoquinoline ligands. The emission spectra and phosphorescence quantum yields of the complexes differ from that of tris(1-phenylisoquinolinato-C2,N)iridium(iii)(Irpiq) depending on the substituents. The maximum emission peak, quantum yield and lifetime of those complexes ranged from 598-635 nm, 0.17-0.32 and 1.07-2.34 micros, respectively. This indicates the nature of the substituents has a significant influence on the kinetics of the excited-state decay. The substituents attached to phenyl ring have an influence on a stability of the HOMO. Furthermore, those substituents have effect on the contribution to a mixing between 3pi-pi* and (3)MLCT for the lowest excited states. Some of the complexes display the larger quantum yield than Irpiq, which has the quantum yield of 0.22. The organic light emitting diode (OLED) device based on tris [1-(4-fluoro-5-methylphenyl)isoquinolinato-C2,N]iridium(iii)(Ir4F5Mpiq) yielded high external quantum efficiency of 15.5% and a power efficiency of 12.4 lm W(-1) at a luminance of 218 cd m(-2). An emission color of the device was close to an NTSC specification with CIE chromaticity characteristics of (0.66, 0.34).
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
May
pubmed:issn
1477-9226
pubmed:author
pubmed:issnType
Print
pubmed:day
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1583-90
pubmed:year
2005
pubmed:articleTitle
Substituent effects of iridium complexes for highly efficient red OLEDs.
pubmed:affiliation
OD project Canon Inc., 5-1 Morinosato Wakamiya, Atsugishi, Kanagawa, Japan. okada.shinjiro@canon.co.jp
pubmed:publicationType
Journal Article