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Visible to near-infrared organic light-emitting diodes using phosphorescent materials by solution process
- Source :
-
Thin Solid Films . Nov2009, Vol. 518 Issue 2, p551-554. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: The characteristics of visible to near-infrared OLEDs with co-doping three phosphorescent dyes, iridium (III) bis(2-(4,6-difluorephenyl)pyridinato-N,C2′) (FIrpic), tris(1-phenylisoquinoline)iridium(III) (Ir(piq)3), Pt-tetraphenyltetrabenzoporphyrin (Pt(tpbp)) in poly(N-vinylcarbazole) host as blue, red and near-infrared emitters are investigated. Visible to near-infrared OLEDs covering the wavelength range from 450 to 850 nm were achieved. The device with 11.7 wt.% FIrpic, 0.3 wt.% Ir(piq)3 and 0.1 wt.% Pt(tpbp) showed white light emission of CIE (0.34, 0.39). The co-doping results in efficient cascade energy transfer from host through Ir complexes. For 0.1 wt.% Pt(tpbp), the optimal device exhibited the maximum output power of 3 mW/cm2, maximum luminance of 2900 cd/m2 and the maximum efficiency of 7 cd/A. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00406090
- Volume :
- 518
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Thin Solid Films
- Publication Type :
- Academic Journal
- Accession number :
- 44696592
- Full Text :
- https://doi.org/10.1016/j.tsf.2009.07.017