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Product Code M2123A1
Price $319.00 ex. VAT

Cab-Ph-TRZ, phosphorescent host material for green and red LEDs

Bipolar nature delivers higher power efficiencies than CBP

9-(4-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenyl)-9H -carbazole (Cab-Ph-TRZ) is ambipolar in nature, with triazine as electron-deficient and carbazole as electron-rich moieties.

Cab-Ph-TRZ is typically used as a phosphorescent host material for green and red light-emitting diodes. Compared to CBP - 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl as a host material, Cab-Ph-TRZ shows higher power efficiencies with lower driving voltage, thanks to its bipolar nature.

General Information

CAS number 440354-93-8
Full name 9-(4-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenyl)-9H -carbazole
Chemical formula C33H22N4
Molecular weight 474.55 g/mol
Absorption λmax 262, 356 nm in DCM
Fluorescence λmax 467 nm in DCM
HOMO/LUMO HOMO 5.9 eV, LUMO 2.98 eV [1]
Synonyms CzTRZ, Cz-Ph-TRZ, PhCzTRZ
Classification / Family Triazine derivatives, Light-emitting diodes, Organic electronics, TADF blue emitter, PHOLEDs host materials, Sublimed materials.

Product Details

Purity Sublimed >99.0% (HPLC)
Melting point TGA: 300 °C (0.5% weight loss)
Appearance Off-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 for OLED devices page.

Chemical Structure

cab-ph-trz chemical structure
Chemical structure of Cab-Ph-TRZ

Device Structure(s)

Device structure ITO/NPB (30 nm)/TCTA (10 nm)/Cab-Ph-TRZ:Ir(ppy)2(acac)(7%; 30 nm)/TPBi (30 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour Green green light emitting device
Max Current Efficiency 55.6 cd/A
Max. Power Efficiency 51.3 lm W-1
Device structure ITO/NPB (30 nm)/TCTA (10 nm)/Cab-Ph-TRZ:Ir(2-phq)(6%; 30 nm)/TPBi (30 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour Red red light emitting device
Max Current Efficiency 28.72 cd/A
Max. Power Efficiency 22.85lm W-1

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


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2123A1 250 mg £290
Sublimed (>99.0% purity) M2123A1 500 mg £480
Sublimed (>99.0% purity) M2123A1 1 g £850

MSDS Documentation

Cab-Ph-TRZ MSDSCab-Ph-TRZ MSDS sheet

Literature and Reviews

  1. Tailoring electronic structure of organic host for high-performance phosphorescent organic light-emitting diodes, J. Xiao et al., Org. Electrons, 15, 2763–2768 (2014); DIO: 10.1016/j.orgel.2014.08.006.
  2. Operational lifetimes of organic light-emitting diodes dominated by Förster resonance energy transfer, H. Fukagawa et al., Sci. Reports, 7:1735 (2017); DOI:10.1038/s41598-017-02033-3.
  3. A New Design Strategy for Efficient Thermally Activated Delayed Fluorescence Organic Emitters: From Twisted to Planar Structures, X-K. Chen et al., Adv. Mater., 29, 1702767 (2017); DOI: 10.1002/adma.201702767.

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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