We ship worldwide. Spend or more for FREE tracked shipping to , normally .
For more information, please see our worldwide shipping page.
We ship worldwide. Tracked large item shipping to from . All other products ship free with the purchase of an Ossila Glove Box.
Make sure your lab is fully equipped and stock up on high-quality materials, accessories, and consumables with our large order discounts. Spend over £10,000 for a 10% discount.
Ir(ppy)2(acac), OLED material with high quantum yields
Higher external quantum efficiency than Ir(ppy)3
Like Ir(ppy)3, bis[2-(2-pyridinyl-N)phenyl-C](acetylacetonato)iridium(III), or Ir(ppy)2(acac), is one of the most studied OLED materials due to its high quantum yields. When doped into 3,5-Diphenyl-4-(1-naphthyl)-1H-1,2,4-triazole (TAZ), very high external quantum efficiencies of (19.06 ± 1.0%) and luminous power efficiencies of 60±5 lm/W were achieved.[1] This was attributed to the nearly 100% internal phosphorescence efficiency of Ir(ppy)2(acac), coupled with balanced hole and electron injection, and triplet exciton confinement within the light-emitting layer.
Ir(ppy)2(acac) demonstrated higher external quantum efficiency when compared with Ir(ppy)3. It was suggested that Ir(ppy)2(acac) molecules preferentially align so that their transition dipole moment is parallel to the substrate, whereas the orientation of Ir(ppy)3 molecules is nearly isotropic.[2]
Organometallic complex, Green emitter, phosphorescence dopant OLEDs, OLED and PLED materials, Sublimed materials
Product Details
Purity
>99.5% (sublimed)
>98.0% (unsublimed)
Melting point
349-356 °C
Appearance
Yellow powder/crystals
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.
Chemical Structure
Chemical structure of Bis[2-(2-pyridinyl-N)phenyl-C](acetylacetonato)iridium(III)
Nearly 100% internal phosphorescence efficiency in an organic light-emitting device, C. Adachi et al., J. Appl. Phys. 90, 5048 (2001); http://dx.doi.org/10.1063/1.1409582.
Comparing the emissive dipole orientation of two similar phosphorescent green emitter molecules in highly efficient organic light-emitting diodes, P. Liehm et al., Appl. Phys. Lett. 101, 253304 (2012); http://dx.doi.org/10.1063/1.4773188.
Highly simplified phosphorescent organic light emitting diode with >20% external quantum efficiency at >10,000cd/m2, Z. B. Wang et al., Appl. Phys. Lett. 98, 073310 (2011); doi: 10.1063/1.3532844 .
Chlorinated Indium Tin Oxide Electrodes with High Work Function for Organic Device Compatibility, M. G. Helander et al., Science, 332, 944-947 (2011); DOI: 10.1126/science.1202992.
Low Roll-Off and High Efficiency Orange Organic Light Emitting Diodes with Controlled Co-Doping of Green and Red Phosphorescent Dopants in an Exciplex Forming CoHost, S. Lee et al., Adv. Funct. Mater., 23, 4105–4110 (2013); DOI: 10.1002/adfm.201300187.
Exciplex-Forming Co-host for Organic Light-Emitting Diodes with Ultimate Efficiency, Y-S. Park et al., Adv. Funct. Mater., 23, 4914–4920 (2013); DOI: 10.1002/adfm.201300547.
1,3,5-Triazine derivatives as new electron transport–type host materials for highly efficient green phosphorescent OLEDs,H-Fan Chen et al., J. Mater. Chem., 19, 8112–8118 (2009).
A white organic light-emitting diode with ultra-high color rendering index, high efficiency, and extremely low efficiency roll-off, N. Sun et al., Appl. Phys. Lett. 105, 013303 (2014); http://dx.doi.org/10.1063/1.4890217.
A multi-zoned white organic light-emitting diode with high CRI and low color temperature, T. Zhang et al., Sci. Reports, 6:20517; DOI: 10.1038/srep20517.
Achieving Above 60% External Quantum Effi ciency in Organic Light-Emitting Devices Using ITO-Free Low-Index Transparent Electrode and Emitters with Preferential Horizontal Emitting Dipoles, C-Y. Lu et al., Adv. Funct. Mater. 2016; DOI: 10.1002/adfm.201505312.
High-Efficiency Green Phosphorescent Organic Light-Emitting Diode Based on Simplified Device Structures, M. Zhang et al., Chin. Phys. Lett., 32, 097803 (2015).
To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.