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Product Code M2265A1
Price $242.00 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 for OLED devices page.

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 £220
Sublimed(>99.0% purity) M2265A1 250 mg £440
Sublimed(>99.0% purity) M2265A1 500 mg £720
Sublimed(>99.0% purity) M2265A1 1 g £1200

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 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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