TCTA
CAS Number 139092-78-7
Electron / Hole Transport Layer Materials, High Purity Sublimed Materials, Host Materials, Semiconducting Molecules, TADF Materials
TCTA, HTL and HIL material in LEDs and perovskite solar cells
Popular host material for green, red and white PhOLEDs
Having three carbazole units as the pendants and triarylamine at the core, tris(4-carbazoyl-9-ylphenyl)amine (TCTA) is electron-rich. As a result, it is widely used as a hole-transport and hole-injection material in light-emitting diodes and perovskite solar cells. With low electron mobility, TCTA has also been used as exciton/electron blocking layer materials because of its high lying LUMO energy level (LUMO = 2.4 eV).
TCTA is also a very popular phosphorescent host material due to its large band gap (Eg = 3.4 eV) for green, red and white phosphorescent organic light-emitting diodes (PhOLEDs).
General Information
CAS number | 139092-78-7 |
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Chemical formula | C54H36N4 |
Molecular weight | 740.89 g/mol |
Absorption | λmax 293 and 326 nm (THF) |
Fluorescence | λem 385 nm (THF) |
HOMO/LUMO | HOMO = 5.83 eV, LUMO = 2.43 eV [1] |
Synonyms |
|
Classification / Family | Carbazole derivatives, Hole-injection layer materials, Hole-transporting layer materials, Phosphorescent host materials, Electron-blocking layer materials, Light-emitting diodes |
Product Details
Purity |
>99.5% (sublimed) >98.0% (unsublimed) |
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Melting point | 298~300 °C |
Appearance | 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.
Chemical Structure
Device Structure(s)
Device structure | ITO/MoO3 (8 nm)/(NPB)(80 nm)/TAPC(5 nm)/TCTA:4 wt% Ir(MDQ)2(acac) (4 nm)/TCTA:2 wt% Ir(ppy)3 (4 nm)/43 wt% TCTA: 43 wt% 26DCzPPy: 14 wt% FIrpic (5 nm)/TmPyPb (40 nm)/LiF/Al [1] |
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Colour | White |
Max. EQE | 19.4% |
Max. Current Efficiency | 43.6 cd/A |
Max. Power Efficiency | 45.8 lm W−1 |
Device structure | ITO/PEDOT:PSS/TCTA:TPOB:10 wt % FIrpic/TmPyPB/Cs2CO3/Al [2] |
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Colour | Blue |
Max. EQE | 13.8% |
Max. Current Efficiency | 28.2 cd/A |
Max. Power Efficiency | 22 lm W−1 |
Device structure | ITO/NPB (40 nm)/TCTA (20 nm)/TPA-C-TPA (30 nm)/TPBi (20 nm)/LiF (1 nm)/Al (200 nm) [3] |
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Colour | Deep Blue |
EQE@10 mA/ cm2 | 4.83% |
Current Efficiency@10 mA/ cm2 | 3.18 cd/A |
Power Efficiency@10 mA/ cm2 | 2.03 lm W−1 |
Device structure | ITO/PEDOT:PSS (25 nm)/TCTA:POPH:10 wt% FIrpic (35 nm)/TPBI (35 nm)/Ca (10 nm)/Ag [4] |
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Colour | Blue |
Max. Luminance | 40,000 cd/m2 |
Max. Current Efficiency | 25.8 cd/A |
Max. Power Efficiency | 22.5 lm W−1 |
Device structure | ITO/PEDOT:PSS(40 nm)/TCTA:TAPC:FIrpic:Ir(ppy)3:Ir(MDQ)2(acac) (40nm)/TmPyPB (50 nm)/LiF (1 nm)/Al [5] |
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Colour | White |
Max. Current Efficiency | 37.1 cd/A |
Max. Power Efficiency | 32.1 lm W−1 |
Device structure | ITO/MoO3 (3nm)/NPB (20nm)/TCTA (8nm)/TCTA:3P-T2T (1:1): 1.0 wt% DCJTB (15nm)/3P-T2T (45nm)/LiF (1nm)/Al [6] |
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Colour | Red |
MAX. EQE | 10.15% |
Max. Luminance | 22, 767 cd/m2 |
Max. Current Efficiency | 22.7 cd/A |
Max. Current Efficiency | 21.5 lm W−1 |
Device structure | ITO/PEDOT:PSS/α-NPD (20 nm)/TCTA (5 nm)/T2T*:(PPy)2Ir(acac)(9:1 wt%) (25 nm)/TAZ (50 nm)/LiF (0.5 nm)/Al (100 nm) [7] |
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Colour | Green |
Max. Luminance | 85,000 cd/m2 |
Max. Current Efficiency | 54 cd/A |
Max. EQE | 17.4% |
Max. Power Efficiency | 48 lm W−1 |
Device structure | ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/mCP:6 wt%2CzPN (11 nm)/TAZ:4 wt% PO-01 (4 nm)/TAZ (40 nm)/LiF (0.5 nm)/Al (150 nm) [8] |
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Colour | White |
Max. EQE | 38.4% |
Max. Power Efficiency | 80.1 lm W−1 |
Device structure | ITO/EHI608/TCTA/TCTA:3TP:Firpic (1:1:0.17)/3TPYMB/Al [9] |
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Colour | Blue |
Max Power Efficiency | 27.5 lm W-1 |
Max. Current Efficiency | 36.0 cd/A |
Device structure | ITO/MoOx (5 nm)/NPB (40 nm)/4% Y-Pt*:TCTA (20 nm)/8% FIrpic:mCP(10 nm)/8% FIrpic:UGH2 (10 nm)/BAlq (40 nm)/LiF (0.5 nm)/Al (100 nm) [10] |
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Colour | White |
Max. EQE | 16.0% |
Max. Current Efficiency | 45.6 cd/A |
Max. Power Efficiency | 35.8 lm W−1 |
*For chemical structure informations please refer to the cited references.
Pricing
Grade | Order Code | Quantity | Price |
---|---|---|---|
Sublimed (>99.5% purity) | M471 | 500 mg |
£165 |
Unsublimed (>98.0% purity) | M472 | 1 g | £115 |
Sublimed (>99.5% purity) | M471 | 1 g | £240 |
MSDS Documentation
Literature and Reviews
- High-Efficiency Phosphorescent White Organic Light-Emitting Diodes with Stable Emission Spectrum Based on RGB Separately Monochromatic Emission Layers, Q. Zhang et al., Chin. Phys. Lett., 31 (4) 046801 (2014).
- Enhanced Electron Affinity and Exciton Confinement in ExciplexType Host: Power Efficient Solution-Processed Blue Phosphorescent OLEDs with Low Turn-on Voltage, X. Ban et al., ACS Appl. Mater. Interfaces, 8, 2010-2016 (2016); DOI: 10.1021/acsami.5b10335.
- Highly efficient emitters of ultra-deep-blue light made from chrysene chromophores, H. Shin et al., J. Mater. Chem. C, 2016, Advance Article; DOI: 10.1039/C5TC03749B.
- High Power Efficiency Solution-Processed Blue Phosphorescent Organic Light-Emitting Diodes Using Exciplex-Type Host with a Turn-on Voltage Approaching the Theoretical Limit, X. Ban et al., ACS Appl. Mater. Interfaces, 7 (45), 25129–25138 (2015); DOI: 10.1021/acsami.5b06424.
- Solution-Processed Small Molecules As Mixed Host for Highly Efficient Blue and White Phosphorescent Organic Light-Emitting Diodes, Q Fu. et al., ACS Appl. Mater. Interfaces, 4, 6579−6586 (2012); dx.doi.org/10.1021/am301703a.
- Highly efficient red OLEDs using DCJTB as the dopant and delayed fluorescent exciplex as the host, B. Zhao et al., Scientific Reports | 5:10697 | DOI: 10.1038/srep10697.
- 1,3,5-Triazine derivatives as new electron transport–type host materials for highly efficient green phosphorescent OLEDs,H-Fan Chen et al., J. Mater. Chem., 19, 8112–8118 (2009).
- Highly efficient and color-stable hybrid warm white organic light-emitting diodes using a blue material with thermally activated delayed fluorescence, D. Zhang et al., J. Mater. Chem. C, 2, 8191-8197 (2014); DOI: 10.1039/c4tc01289e.
- Enhance efficiency of blue and white organic light emitting diodes with mixed host emitting layer using TCTA and 3TPYMB, T-C. Liao et al., Curr. Appl. Phys., 13, S152-S155, (2013).
- High Efficiency White Organic Light-Emitting Devices Incorporating Yellow Phosphorescent Platinum(II) Complex and Composite Blue Host, S-L. Lai et al., Adv. Funct. Mater., 23, 5168–5176 (2013); DOI: 10.1002/adfm.201300281.