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Journal
2009 | 7 | 4 | 836-845
Article title

Investigation of FIrpic in PhOLEDs via LC/MS technique

Content
Title variants
Languages of publication
EN
Abstracts
EN
The commercial breakthrough of phosphorescent organic white light sources is presently hampered due to the unavailability of a stable blue phosphorescent emitter material. Moreover, only few analytical investigations have been made regarding the chemical degradation of the phosphorescent emitter materials during the processing or the operation of the devices. Organic light emitting devices (OLEDs) containing phosphorescent metal complexes with iridium as central ion were investigated. Special attention was paid to the chemical degradation of the material. The devices were analyzed by means of high performance liquid chromatography coupled with mass spectrometry (HPLC/MS). Electron spray ionization (ESI) was employed as ionization source. Isomerization phenomena of the blue-green emitting heteroleptic iridium complex FIrpic could be observed after the device manufacture and after operation. These findings could give hints on the mechanisms that influence the lifetime of PhOLEDs based on FIrpic or similar blue emitters. [...]
Keywords
EN
Publisher
Journal
Year
Volume
7
Issue
4
Pages
836-845
Physical description
Dates
published
1 - 12 - 2009
online
6 - 10 - 2009
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-009-0084-1
Identifiers
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