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Product Code M2479A1-100mg
Price $240

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 EQEmax (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.

Host material for OLED devices

TADF/MR-TADF Host Material

Improves efficiency of OLEDs

Useful characteristics

Robust Molecule

Moderate polarity & good processability

High purity PhCzBCz

High Purity

≥99% (sublimed)

Reliable shipping for PhCzBCz

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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


PhCzBCz chemical structure, CAS 2692683-03-5
Chemical structure of PhCzBCz, CAS no: 2692683-03-5

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 Green
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 Blue
Max. Luminance 10000 cd/m2
Max. EQE 37.6%
Luminance Wavelength 476 nm

MSDS Documentation


PhCzBCz MSDS SheetPhCzBCz 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.


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