PhCzBCz

CAS Number 2692683-03-5

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

Carbazole-Based Host Material for OLEDs

Improving efficiency of TADF/MR-TADF OLED devices

Overview | Product Information | MSDS | Related Products

PhCzBCz (CAS number 2692683-03-5) is an organic compound consisting of a phenyl-carbazole and a phenyl-bicarbazole. PhCzBCz is fully aromatic, serving as a robust host material in thermally activated delayed fluorescence (TADF) and multi-resonance-TADF (MR-TADF) emitters.

PhCzBCz exhibits a high triplet energy (2.9 eV), enabling effective confinement of triplet excitons within guest molecules. As a host material in the emitting layer, PhCzBCz enhances charge transfer capabilities while mitigating exciton quenching caused by molecular π–π stacking. This allows the OLED device (such as with DtCzBN-CNBT2) to achive high EQE_max (40.2%) with mild efficiency roll-off (EQE₁₀₀₀ of 20.7%)

Additionally, PhCzBCz demonstrates moderate polarity and good solution processability, making it suitable for high-temperature annealing.

TADF/MR-TADF Host Material

Improves efficiency of OLEDs

Robust Molecule

Moderate polarity & good processability

High Purity

≥99% (sublimed)

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General Information

CAS Number	2692683-03-5
Chemical Formula	C₄₈H₃₁N₃
Full Name	9-(2-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-3,9′-bicarbazole
Molecular Weight	649.80 g/mol
Absorption	N/A
Fluorescence	N/A
HOMO and LUMO	−5.4 eV (HOMO) −2.0 eV (LUMO)
Processing Solvent	Chlorobenzene and dichloromethane
Melting Point	N/A
Synonyms	N/A
Classification or Family	Host materials, TADF, MR-TADF, OLEDs

Product Details

Purity	Sublimed 99%
Appearance	White powder

Chemical Structure

Device Structure

Device Structure	ITO/HATCN (5 nm)/TAPC(30 nm)/TCTA (10 nm)/mCBP (10 nm)/15 wt% DtCzBN-CNBT2:PhCzBCz(20nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (100 nm)
Color
Max. Luminance	7800 cd/m²
Max. EQE	40.2%
Luminance Wavelength	508 nm

Device Structure	ITO/HATCN (5 nm)/TAPC (50 nm)/TCTA (5 nm)/3 wt% BNCz-NPO (BNCz-NPS): PhCzBCz (10 nm)/10 wt% PPCz-TRZ:PPF (2 nm)/PPF (5 nm)/TmPyPB (30 nm)/LiF (1 nm)/Al (120 nm)
Color
Max. Luminance	10000 cd/m²
Max. EQE	37.6%
Luminance Wavelength	476 nm

MSDS Documentation

PhCzBCz MSDS Sheet

References

A highly twisted carbazole-fused DABNA derivative as an orange-red TADF emitter for OLEDs with nearly 40% EQE, Y.-C. Cheng et al., Angew. Chem. Int. Ed., 61, e202212575 (2022); DOI: 10.1002/anie.202212575.
The combination of a donor–acceptor TADF and a MR-TADF emitting core results in outstanding electroluminescence performance, D. Chem et al., Adv. Mater., 36, 2412761 (2024); DOI: 10.1002/adma.202412761.
High-performance narrowband OLED with low efficiency roll-off based on sulfur-incorporated organoboron emitter, D. Li et al., Adv. Optical Mater., 11, 2301084 (2023); DOI: 10.1002/adom.202301084.

Efficient circularly polarized multiple resonance thermally activated delayed fluorescence from B,N-embedded hetero[8]helicene enantiomers, T. Huang et al., Chem. Sci., 15, 15170 (2024); DOI: 10.1039/d4sc03854a.
Confining donor conformation distributions for efficient thermally activated delayed fluorescence with fast spin-flipping, W. Qiu et al., Nat. Common., 14, 2564 (2023); DOI: 10.1038/s41467-023-38197-y.
Highly efficient electroluminescent materials with high color purity based on strong acceptor attachment onto B-N-containing multiple resonance frameworks, Y. Xu et al., CCS Chem., 4, 2065–2079 (2022); DOI: 10.31635/ccschem.021.202101033.

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