mCP

mCP, often used as a host material for efficient blue phosphorescent LEDs

Increases the photoluminescence internal quantum yield of FIrpic

1,3-Bis(N-carbazolyl)benzene, known as mCP, with a high triplet energy (E_T  = 2.91 eV) and a very deep highest occupied molecular orbital (HOMO) level, is often used as host materials for efficient blue phosphorescent light-emitting diodes. Kawamura et al. demonstrated that the photoluminescence internal quantum yield of the blue emitter of FIrpic could approach nearly 100% when doped into the wide energy gap host of mCP [1].

General Information

Product Details

*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

Device Structure(s)

Device structure	ITO(50 nm)/PEDOT:PSS(60 nm)/TAPC(20 nm)/mCP(10 nm)/CbBPCb*(25 nm)/Al(20 nm) [2]
Colour	Blue
Max. EQE	≥ 30%

Device structure	ITO/PEDOT:PSS/NPB/mCP/FPt*(1.5 nm)/OXD-7/CsF/Al [3]
Colour	White
Max. EQE	17.5%
Max. Power Efficiency	45 lm W−1

Device structure	ITO(50 nm)/PEDOT:PSS(60 nm)/TAPC(20 nm)/mCP(10 nm)/mCP:BmPyPb*:4CzIPN(25 nm)/TSPO1(35 nm)/LiF(1 nm)/Al(200 nm)   [4]
Colour	Green
Max. EQE	28.6%
Max. Power Efficiency	56.6 lm W−1

Device structure	ITO/DNTPD* (60 nm)/NPB (20 nm)/mCP (10 nm)/mCP:FIrpic (25 nm)/CBP:Ir(piq)2acac (5 nm)/BCP (5 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm) [5]
Colour	White
EQE@500 cd/m2	8.2 %
Current Efficiency@500 cd/m2	12.7 lm W−1

Device structure	ITO/MoO3 (7nm)/NPB (85 nm)/ (PPQ)2Ir(acac):Ir(ppy)3:FIrpic:mCP/TAZ/LiF/Al [6]
Colour	White
Max. EQE	20.1%
Max. Power Efficiency	41.3 lm W−1

Device structure	ITO/PEDOT:PSS(40 nm)/mCP:PVK:OXD-7(33:33:22 wt%):(dfpmpy)2Ir(pic-N-O):(F4PPQ)2Ir(pic-N-O):(EO2- Cz-PhQ)2Ir(acac)*(12:0.25:0.15 wt%)(50-60 nm)/TmPyPB(20 nm)/LiF(1 nm)/Al(150 nm) [7]
Color	White
Max. EQE	11.45%
Max. Current Efficiency	23.04 cd/A
Max. Power Efficiency	8.04 lm W−1

*For chemical structure information, please refer to the cited reference.

Pricing

MSDS Documentation

mCP MSDS sheet

Literature and Reviews

1. 100% phosphorescence quantum efficiency of Ir(III) complexes in organic semiconductor films, Y.Kawamura et al., Appl. Phys. Lett. 86, 071104 (2005); http://dx.doi.org/10.1063/1.1862777.
2. Above 30% External Quantum Efficiency in Blue Phosphorescent Organic Light-Emitting Diodes Using Pyrido[2,3-b]indole Derivatives as Host Materials, C. Lee et al., Adv. Mater., 25, 5450–5454 (2013).
3. Efficient organic light-emitting devices with platinum-complex emissive layer, X. Yang et al., Appl. Phys. Lett., 98, 033302 (2011); doi: 10.1063/1.3541447.
4. Engineering of Mixed Host for High External Quantum Efficiency above 25% in Green Thermally Activated Delayed Fluorescence Device, B. Kim et al., Adv. Funct. Mater., 24, 3970–3977 (2014).
5. Improved color stability in white phosphorescent organic light-emitting diodes using charge confining structure without interlayer, S-H. Kim et al., Appl. Phys. Lett. 91, 123509 (2007); http://dx.doi.org/10.1063/1.2786853.
6. Manipulating Charges and Excitons within aSingle-Host System to Accomplish Efficiency/CRI/Color-Stability Trade-off for High-PerformanceOWLEDs, Q. Wang et al., Adv. Mater., 21, 2397–2401 (2009).
7. Single emissive layer white phosphorescent organic light-emitting diodes based on solution-processed iridiumcomplexes, W. Cho et al., Dyes and Pigments, 108, 115-120 (2014), doi:10.1016/j.dyepig.2014.04.033.
8. Wide-Energy-Gap Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes, S. Ye et al., Chem. Mater., 21 (7), 1333–1342 (2014).
9. High efficiency phosphorescent organic light-emitting diodes using carbazole-type triplet exciton blocking layer, S. Kim et al., Appl. Phys. Lett., 90, 223505 (2007); http://dx.doi.org/10.1063/1.2742788.
10. Deep blue phosphorescent organic light-emitting diodes with excellent external quantum efficiency, J. Park et al., Org. Electronics, 14 (12), 3228-3233 (2013), doi:10.1016/j.orgel.2013.09.017.