TmCzTRZ, bipolar TADF green emitter
Calculated PLQY of 100% in DPEPO host
TmCzTRZ, namely 9,9',9''-(5-(4,6-Diphenyl-1,3,5-triazin-2-yl)benzene-1,2,3-triyl) tris(3,6-dimethyl-9H-carbazole), is methyl substituted TCzTRZ at 3,6-positions of carbazole units. Due to the electron-donating nature of the methyl groups, TmCzTRZ has relatively higher HOMO energy level than TCzTRZ.
TmCzTRZ is a bipolar TADF green emitter with three electron rich 3,6-dimethylcarbazole and one electron deficient 1,3,5-triazine units. Like TCzTRZ, TmCzTrz has a calculated photoluminescence quantum yield (PLQY) of 100% in DPEPO host. An external quantum efficiency (EQE) of over 25% external quantum efficiency has been achieved in a green light emitting device with 30 wt% DPEPO used as host .
|Full name||9,9',9''-(5-(4,6-Diphenyl-1,3,5-triazin-2-yl)benzene-1,2,3-triyl) tris(3,6-dimethyl-9H-carbazole)|
|Molecular weight||889.10 g/mol|
|Absorption||λmax 447 nm (in toluene)|
|Phosphorescene||λmax 500 nm (in film)|
|HOMO/LUMO||HOMO = 5.19 eV, LUMO = 2.11 eV |
|Classification / Family||Triazine derivatives, Light-emitting diodes, Organic electronics, TADF green emitter, PHOLEDs host materials, Sublimed materials.|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||Tg = 205.0 ℃, Tm = 427.9 ℃, Td (Temperature at 5% weight loss) = 436.1 ℃.|
|Appearance||Deep 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.
|Device structure||ITO/PEDOT:PSS (60 nm)/TAPC (20 nm)/mCP (10 nm)/30 wt% DPEPO:TmCzTRZ (25 nm)/TSPO1 (5 nm)/TPBI (20 nm)/LiF (1 nm)/Al (200 nm) |
|Max. Power Efficiency||52.1 lm W-1|
|Max. Current Efficiency||18.6 cd/A|
*For chemical structure information, please refer to the cited references.
|Sublimed (>99.0% purity)||M2336A1||100 mg||£200|
|Sublimed (>99.0% purity)||M2336A1||250 mg||£400|
|Sublimed (>99.0% purity)||M2336A1||500 mg||£680|
|Sublimed (>99.0% purity)||M2336A1||1 g||£1150|
MSDS DocumentationTmCzTRZ MSDS Sheet
Literature and Reviews
- Design Strategy for 25% External Quantum Efficiency in Green and Blue Thermally Activated Delayed Fluorescent Devices, D. Lee et al., Adv. Mater., 27 (39); 5861-5867 (2015); DOI: 10.1002/adma.201502053.
- Triazine-Acceptor-Based Green Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes, R. Braveenth et al., Materials, 12, 2646 (2019); DOI: 10.3390/ma12162646.
- Recent advancements of high efficient donor–acceptor type blue small molecule applied for OLEDs, Y. Li et al., Mater. Today, 20 (5), 258-266 (2017); DOI: 10.1016/j.mattod.2016.12.003..
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