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Product Code M771-1g
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26DCzPPy, one of the most popular bipolar host materials used in OLEDs

Sublimed and unsublimed grades are available for 26DCzPPy

Combining carbazole electron donors with a high triplet energy and a pyridine electron acceptor with a high electron affinity, 2,6-bis(3-(carbazol-9-yl)phenyl)pyridine (26DCzPPy) is one of the most popular bipolar host materials used in organic light-emitting diodes.

Bipolar host materials are molecules composed of an electron-donating moiety capable of mediating hole injection and transportation, and an electron-withdrawing moiety capable of mediating electron injection and transportation.

General Information

CAS number 1013405-24-7
Chemical formula C41H27N3
Molecular weight 561.67 g/mol
Absorption λmax 239, 292 nm (in CH2Cl2)
Fluorescence λem 410 nm (in CH2Cl2)
HOMO/LUMO HOMO = 6.05 eV, LUMO = 2.56 eV [1]
  • 2,6-bis[3-(9H-Carbazol-9-yl)phenyl]pyridine
  • DCzPPy
Classification / Family Carbazole derivatives, Bipolar charge transport layer materials, Phosphorescent host materials, OLEDs, Organic electronics

Product Details

Purity Sublimed grade >99%, Unsublimed grade >99%
Melting point TGA > 370 °C (0.5% weight loss)
Appearance White powder/crystals

Chemical Structure

Chemical structure of 26DCzPPY
Chemical structure of 2,6-bis[3-(9H-Carbazol-9-yl)phenyl]pyridine (26DCzPPy)

Device Structure(s)

Device structure  ITO/TAPC (40 nm)/TCTA (2 nm)/26DCzPPy:TCTA:FIrpic (0.4:0.4:0.2) (5 nm)/26DCzPPy:PPT:FIrpic (0.4:0.4:0.2) (5 nm)/3TPYMB (55 nm)/CsF (2 nm)/Al (180 nm) [1]
Colour Blue blue light emitting device
Power Efficiency @ 1000 cd/m2 24 lm W−1
Current Efficiency @ 1000 cd/m2 42 cd/A
Power Efficiency @ 1000 cd/m2 30 lm/W
Device structure ITO/TAPC (40 nm)/TCTA (2 nm)/26DCzPPy:TCTA :FIrpic/26DCzPPy:TCTA:FIrpic:Os/26DCzPPy:PPT:FIrpic:Os/26DCzPPy: PPT:FIrpic/3TPYMB (55 nm)/CsF (2 nm)/Al (180 nm) [1]    
Colour White white light emitting device
Current Efficiency @ 1000 cd/m2 35.7 cd/A
Device structure  ITO/PEDOT: PSS (60 nm)/26DCzPPy:FIrpic (10 wt.%, 60 nm)/TmPyPB (30 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour Blue blue light emitting device
Max. EQE 12.1%
Max Current Efficiency 21.8 cd/A
Max Power Efficiency 12.7 lm/W
Device structure ITO/PEDOT: PSS (60 nm)/TCTA:26DCzPPy:FIrpic (10 wt.%, 60 nm)/TmPyPB (30 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour Blue blue light emitting device
Max. EQE 14.6%
Max Current Efficiency 25.1 cd/A
Max Power Efficiency 15.7 lm/W
Device structure ITO/TAPC:MoOx (10 nm, 15 wt.%)/TAPC(35 nm)/TcTa:Ir(BT)2(acac) (5 nm, 4 wt.%)/26DCzPPy:FIrpic (5 nm, 15 wt.%)/26DCzPPy:Ir(BT)2(acac) (5 nm, 4 wt.%)/BPhen (40 nm)/Cs2CO3 (1 nm)/Al (100 nm) [3]
Colour White white light emitting device
Max. EQE 13.2%
Max. Current Efficiency 35.0 cd/A
Max. Power Efficiency 30.6 lm W1
Device structure Si/SiO2/Al (80 nm)/MoOx: TAPC (43 nm, 15 wt.%)/TAPC (10 nm)/Ir(piq)3:TcTa (3 nm, 6%)/TcTa (2 nm)/FIrpic:26DCzPPy (5 nm, 12 wt.%)/BPhen (2 nm)/PO-01*:26DCzPPy (5 nm, 6 wt.%)/BPhen (40 nm)/Cs2CO3 (1 nm)/Al (2 nm)/Cu (18 nm)/TcTa (60 nm) [4]
Colour White white light emitting device
EQE @ 1000 cd/m2 10%
Current Efficiency @ 1000 cd/m2 25.6 cd/A
Power Efficiency @ 1000 cd/m2 20.1 lm W1
Device structure PEN (120 mm)/ITO (170 nm)/MeO-TPD:F4-TCNQ (100 nm, 4%)/NPB (15 nm)/TCTA (5 nm)/TCTA:Ir(dmppy)2(dpp) (1 nm, 20%)/TCTA:FIrpic (4 nm, 7%)/26DCzPPy:FIrpic (4 nm, 20%)/26DCzPPy:Ir(dmppy)2(dpp) (1 nm, 20%)/TmPyPB (50 nm)/LiF (1 nm)/Al (200 nm) [5]
Colour White white light emitting device
Max. Current Efficiency 96.8 cd/A
Max. Power Efficiency 101.3 lm W−1
Device structure ITO (90 nm)/HATCN (5 nm)/TAPC (65 nm)/10 wt% fac -Ir(mpim)3 –doped TCTA (5 nm)/10 wt% fac -Ir(mpim)3 -doped 26DCzPPy (5 nm)/B3PyPB* (65 nm)/Liq (2 nm)/Al (80 nm) [6]
Colour Blue blue light emitting device
EQE @ 100 cd/m2 29.6%
Current Efficiency @ 100 cd/m2 73.2 cd/A
Power Efficiency @ 100 cd/m2 75.6 lm/W
Device structure ITO/PEDOT:PSS (50 nm)/TCTA (30 nm)/26DCzPPy:Ir(mppy)3 94:6 (40 nm)/TPBI (40 nm)/LiF (0.8 nm)/Al (100 nm)  [7]
Colour Green green light emitting device
Current Efficiency @ 1000 cd/m2 41.9 cd/A
Power Efficiency @ 1000 cd/m2 23.4 lm W1  
Device structure ITO/TAPC (40 nm)/TcTa (10 nm)/5a* (4%):TcTa (5 nm)/5a* (4%):26DCzPPy (10 nm)/TmPyPB (40 nm)/LiF(1 nm)/Al(100 nm) [8]
Colour Red red light emitting device
Max. Luminance 11,023 cd/m2
Max. Current Efficiency 17.36 cd/A
Max. Power Efficiency 14.73 lm W1  

*For chemical structure information please refer to the cited references.

MSDS Documentation

26DCzPPy MSDS26DCzPPy MSDS sheet

Literature and Reviews

  1. Blue and white phosphorescent organic light emittingdiode performance improvementbyconfining electrons and holes inside double emitting layers, Y-S.Tsai et al., J. Luminescence 153, 312–316 (2014);
  2. Soluble processed low-voltage and high efficiency blue phosphorescent organic light-emitting devices using small molecule host systems, Y. Doh et al., Org. Electronics, 13, 586–592 (2012); doi:10.1016/j.orgel.2012.01.003.
  3. Color stable and low driving voltage white organic light-emitting diodes with low efficiency roll-off achieved by selective hole transport buffer layers, Z. Zhang et al., Org. Electronics 13, 2296–2300 (2012);
  4. High performance top-emitting and transparent white organic light-emitting diodes based on Al/Cu/TcTa transparent electrodes for active matrix displays and lighting applications, Z. Zhang et al., Org. Electronics,14, 1452–1457 (2013);
  5. Extremely stable-color flexible white organic lightemitting diodes with efficiency exceeding 100 lmW-1, B. Liu et al., J. Mater. Chem. C, 2, 9836 (2014); DOI: 10.1039/c4tc01582g.
  6. Low-Driving-Voltage Blue Phosphorescent Organic Light-Emitting Devices with External Quantum Efficiency of 30%, K. Udagawa et al., Adv. Mater., 26, 5062–5066 (2014); DOI: 10.1002/adma.201401621.
  7. Interface and thickness tuning for blade coated small-molecule organic light-emitting diodes with high power efficiency, Y-F. Chang et al., Appl. Phys. Lett.,114, 123101 (2013); doi: 10.1063/1.4821881.
  8. Efficient red organic electroluminescent devices by doping platinum(II) Schiff base emitter into two host materials with stepwise energy levels, L. Zhou et al., Opt. Lett., 38 (14), 2373-2375 (2013);

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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