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Product Code M2265A1-100mg
Price £240 ex. VAT

TXO-PhCz, TADF green emitter

High PLQY efficiency and purity (>99.0%)

TXO-PhCz is a TADF green emitter with a typical D-A structure consisting with electron withdrawing thioxanthoneand electron-donating phenylcarbazole units.

The D-A moieties of TXO-PhCz is angularly linked to provide effective separation of electron densities of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) in a single molecule.

Small ΔEST of 73 meV for TXO-PhCz is observed resulting efficient reversed intersystem crossing (RISC) and then high photoluminescence quantum yield (PLQY) efficiency.

General Information

CAS number 1623010-64-9
Chemical formula C31H19NO3S
Molecular weight 485.55g/mol
Absorption λmax396 nm (in toluene)
Fluorescence λem522 nm(in toluene)
HOMO/LUMO HOMO = 5.78 eV, LUMO = 3.58 eV [1]
Full chemical name 2-phenyl-4'-carbazole-9H-thioxanthen-9-one-10,10-dioxide
Synonyms TXO-PhCz
Classification / Family Thioxanthone Derivatives, TADF green emitter materials, Phosphorescent organic light-emitting devices (PHOLEDs),Sublimed materials

Product Details

Purity Sublimed >99.0% (HPLC)
Melting point TGA: >350 °C(0.5% weight loss)
Appearance Yellow 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

TXO-PhCz, CAS# 1623010-64-9
Chemical Structure of 2-phenyl-4'-carbazole-9H-thioxanthen-9-one-10,10-dioxide (TXO-PhCz), CAS#1623010-64-9.

Device Structure(s)

Device structure ITO/ZnO (20 nm)/Cs2CO3 (5 nm)/BPhen (40 nm)/mCBP:10wt% TXO-PhCz (30 nm)/TAPC (40 nm)/MoO3 (10 nm)/Al (90 nm) [2]
Colour Green green light emitting device
Max. Current Efficiency 53.9 cd/A
Max. EQE 16.4 %
Max. Power Efficiency 35.6 Im/W
Device structure ITO (150 nm)/PEDOT (20 nm)/TAPC (20 nm)/mCP (10 nm)/TXO-PhCz:TPBI (5 wt%) (30 nm)/TmPyPB (65 nm)/LiF (0.9 nm)/Al (100 nm) [3]
Colour Green green light emitting device
Max. Current Efficiency 71.9 cd/A
Max. EQE 23.2 %
Max. Power Efficiency 45.2 Im/W
Device structure ITO/ZnO (25 nm)/Cs2CO3(7 nm)/Alq3 (30 nm)/T2T (10 nm)/TXO-PhCz:mCBP (10% 30 nm)/TAPC (50 nm)/MoO3 (10 nm)/Al (100 nm) [4]
Colour Green green light emitting device
Max. Current Efficiency 28.1 cd/A
Max. EQE 9.8 %
Max. Power Efficiency 16.1 Im/W


Grade Order Code Quantity Price
Sublimed(>99.0% purity) M2265A1 100 mg £240
Sublimed(>99.0% purity) M2265A1 250 mg £480
Sublimed(>99.0% purity) M2265A1 500 mg £800
Sublimed(>99.0% purity) M2265A1 1 g £1300

MSDS Documentation


Literature and Reviews

  1. Novel Thermally Activated Delayed Fluorescence Materials–Thioxanthone Derivatives and Their Applications for Highly Efficient OLEDs, H. Wang et al., Adv. Mater., 26(30), 5198-5204 (2014); DOI: 10.1002/adma.201401393.
  2. n-Doping-induced efficient electron-injection for high efficiency inverted organic light-emitting diodes based on thermally activated delayed fluorescence emitter, Y. Chen et al., J. Mater. Chem. C, 5, 8400-8407 (2017); DOI: 10.1039/C7TC02406A.
  3. Reduction of the singlet–triplet energy gap of a thermally activated delayed fluorescence emitter by molecular interaction between the host and the emitter, L. Xie et al., J. Mater. Chem. C, 4, 10776 (2016); DOI: 10.1039/c6tc03155b.
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