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Product Code M2334A1-250mg
Price £360 ex. VAT

BCzTPA, electron-rich host material for PhOLEDs

High purity (>99.0%) material available in 3 different quantities


BCzTPA - 4,4'-(9H,9'H-3,3'-Bicarbazole-9,9'-diyl)bis(N,N-diphenylaniline) has a similar structure to BCzPh with the only difference that BCzTPA has triphenylamines groups attached to the 9H and 9H'-positions of 3,3'-bicarbazole unit, while BCzPh has phenyl groups.

Like BCzPh, BCzTPA is also used as an electron-rich host material for phosphorescent organic light-emitting diodes (PHOLEDs). Extremely low operating voltage green PhOLEDs showing 5000 cd/m2 below 3 V can be created when 17 wt% Ir(ppy)3 doped BCzTPA is used as active layer materials. Being electron-rich, BCzTPA can also potentially be used as an electron donor to form exciplexes either as an emitting layer or host material for highly-efficient fluorescent and phosphorescent OLED devices.

General Information

CAS number 1032174-52-9
Full name 4,4'-(9H,9'H-3,3'-Bicarbazole-9,9'-diyl)bis(N,N-diphenylaniline)
Chemical formula C60H42N4
Molecular weight 819.00 g/mol
Absorption λmax 310nm, 341 nm (in film)
Phosphorescene λmax 397 nm (in film)
HOMO/LUMO HOMO 5.60 eV, LUMO 2.20 eV [1]
Synonyms 4,4'-[3,3'-bi-9H-carbazole]-9,9'-diylbis[N,N-diphenyl-benzenamine]
Classification / Family Carbazole derivatives, TADF Light-emitting diodes, Organic electronics, Hole transport Layer (ETL), PHOLEDs host materials, Sublimed materials.

Product Details

Purity Sublimed >99.0% (HPLC)
Melting point Tg = 157 °C, Tm = 239 °C
Appearance White powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.

Chemical Structure

BCzTPA chemical structure, 4,4'-(9H,9'H-3,3'-Bicarbazole-9,9'-diyl)bis(N,N-diphenylaniline)
Chemical structure of 4,4'-(9H,9'H-3,3'-Bicarbazole-9,9'-diyl)bis(N,N-diphenylaniline) (BCzTPA), CAS# 1032174-52-9.

Device Structure(s)

Device structure ITO (130 nm)/HATCN (1 nm)/TAPC (50nm)/17 wt% Ir(ppy)3:BCzTPA (10 nm)/B4PyPPM (50 nm)/Libpp (1 nm)/Al (80 nm) [1]
Colour green light emitting device Green
Current Efficiency@100 cd/m2 78.6 cd/A
Power Efficiency@100 cd/m2  94.3 lm W-1
EQE@100 cd/m2 22.1%
Device structure ITO (130 nm)/HATCN (1 nm)/TAPC (50 nm)/17 wt% Ir(ppy)3:BCzTPA (5 nm) /25 wt% Ir(ppy)3:CBP (5 nm)/B4PyPPM (50 nm)/Libpp (1 nm)/Al (80 nm) [1]
Colour green light emitting device Green
Current Efficiency@100 cd/m2 84.2 cd/A
Power Efficiency@100 cd/m2 117.6 lm W-1
EQE@100 cd/m2 23.5%
Device structure ITO (130 nm)/PEDOT:PSS (30 nm)/TFB (20 nm)/BCzTPh:BCzTPA:12 wt% Ir(ppy)3 (30 nm)/BPOPB (45 nm)/Liq (1 nm)/Al (100 nm) [3]
Colour green light emitting device Green
Current Efficiency@100 cd/m2 78 cd/A
Power Efficiency@100 cd/m2 52 lm W-1
EQE@100 cd/m2 22%
Device structure ITO (130 nm)/PEDOT:PSS (30 nm)/TFB (20 nm)/BCzTPh:BCzTPA:12 wt% FiRPic (30 nm)/BPOPB (45 nm)/Liq (1 nm)/Al (100 nm) [3]
Colour blue light emitting device Blue
Current Efficiency@100 cd/m2 43 cd/A
Power Efficiency@100 cd/m2 36 lm W-1
EQE@100 cd/m2 20%
Device structure ITO (130 nm)/PEDOT:PSS (30 nm)/TFB (20 nm)/BCzTPh:BCzTPA (1:1):12wt% Ir(Fppy)3:0.2wt% Ir(ppy)3:0.7wt% Ir(phq)3 (30 nm)/BPOPB (50 nm)/Liq (1 nm)/Al (100 nm) [3]
Colour white light emitting device White
Current Efficiency@100 cd/m2 43 cd/A
Power Efficiency@100 cd/m2 35 lm W-1
EQE@100 cd/m2 20%

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

Pricing

Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2334A1 250 mg £360
Sublimed (>99.0% purity) M2334A1 500 mg £600
Sublimed (>99.0% purity) M2334A1 1 g £1050

MSDS Documentation

BCzTPA MSDSBCzTPA MSDS Sheet

Literature and Reviews

  1. Extremely Low Operating Voltage Green Phosphorescent Organic Light-Emitting Devices showing 5000 cd m–2 below 3 V, H. Sasabe et al., Adv. Funct. Mater., 23 (44), 5550-5555 (2013); DOI: 10.1002/adfm.201301069.
  2. 3,3′‐Bicarbazole‐Based Host Materials for High‐Efficiency Blue Phosphorescent OLEDs with Extremely Low Driving Voltage, H. Sasabe et al., Adv. Mater., 24 (24), 3212-3217 (2012); DOI: 10.1002/adma. 201200848.
  3. Solution-processed multilayer small-molecule light-emitting devices with high-efficiency white-light emission, N. Aizawa et al., Nat Commun 5, 5756 (2014); DOI: 10.1038/ncomms6756.
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