FREE shipping to on qualifying orders when you spend or more.


Product Code M2265A1

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)
Fluorescene 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 atechniqueused to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to theSublimed Materials for OLED devicespage.

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:10
wt% TXO-PhCz (30 nm)/TAPC (40 nm)/MoO3 (10 nm)/Al (90 nm) [2]
Colour Greengreen
Max. Current Efficiency 53.9 cd/A
Max. EQE 16.4 %
Max. Power Efficiency 35.6Im/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 Greengreen
Max. Current Efficiency 71.9cd/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 Greengreen
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 £180.00
Sublimed(>99.0% purity) M2265A1 250 mg £360.00
Sublimed(>99.0% purity) M2265A1 500 mg £600.00
Sublimed(>99.0% purity) M2265A1 1 g £1000.00

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.
  4. Highly efficient inverted organic light-emitting diodes based on thermally activated delayed fluorescence, X. Lv et al., Sci. China Mater., 59(6): 421–426 (2016); DOI: 10.1007/s40843-016-5071-y.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.