BCzTPA

CAS Number 1032174-52-9

High Purity Sublimed Materials, Host Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials

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)₃doped 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	λ_max 310nm, 341 nm (in film)
Phosphorescene	λ_max 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	T_g = 157 °C, T_m = 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

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
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
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
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
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
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 MSDS Sheet

Literature and Reviews

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.
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.
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.