Tris(2,4,6-trimethyl-3-(pyridin-3-yl)phenyl)borane (known as 3TPYM) is an excellent electron-transport material. With a LUMO energy level of 3.3 eV , just lower than most of the work function of cathodes (i.e. CsF/Al), it allows efficient electron injection. This prevents extra electrons from accumulating at the interface.
3TPYMB is also a hole-blocking material with high HOMO of 6.80 eV . This is high enough to block the holes from being recombined with the electrons at the cathode.
3TPYMB has a high triplet-excited energy level (ET = 2.95 eV) .
|Molecular weight||599.61 g/mol|
|Absorption*||λmax 331 nm in THF|
|Fluorescence||λem 382 nm in THF|
|HOMO/LUMO||HOMO 6.8 eV, LUMO 3.3 eV|
|Classification / Family||Electron-transporting materials, Phosphorescent host materials, Light-emitting diodes, Perovskite solar cells, Organic electronics, TADF materials, Sublimed materials|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||TGA: 250 °C (0.5% weight loss)|
*Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.
|Device structure||ITO/PEDOT:PSS/m-MTDATA*(20 nm)/ m-MTDATA:3TPYMB(60 nm)/3TPYMB(10 nm)/LiF(0.8 nm)/ Al(100 nm) |
|Max. Current Efficiency||36.79 cd/A|
|Device structure||ITO/EHI608/TCTA/TCTA:3TP:Firpic (1:1:0.17)/3TPYMB/Al |
|Max Power Efficiency||27.5 lm W-1|
|Max. Current Efficiency||36.0 cd/A|
|Device structure||ITO/MoO3 (1 nm)/TAPC (40 nm)/mCP (10 nm)/DPEPO doped with 2* (12wt%, 20 nm)/3TPYMB (50 nm)/LiF (1 nm)/Al (100 nm) |
|Max Current Efficiency||33.5 cd/A|
|Max. Power Efficiency||26.3 lm W-1|
*For chemical structure information, please refer to the cited references
|Sublimed (>99.0% purity)||M2088A1||100 mg||£139.00|
|Sublimed (>99.0% purity)||M2088A1||250 mg||£296.00|
|Sublimed (>99.0% purity)||M2088A1||500 mg||£503.00|
Literature and Reviews
- Boosting thin-ﬁlm perovskite solar cell eﬃciency through vacuum-deposited sub-nanometer small-molecule electron interfacial layers, W-H. Lee et al., Nano Energy 38, 66–71 (2017); https://doi.org/10.1016/j.nanoen.2017.05.049.
- Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion, K. Goushi et al., Nat. Photonics 6, 253–258 (2012) doi:10.1038/nphoton.2012.31.
- Novel Electron-transport Material Containing Boron Atom with a High Triplet Excited Energy Level, D. Tanaka et al., Chem. Lett., 36, 262-263 (2007).
- Exciplex emission and decay of co-deposited 4,4′,4″-tris[3-methylphenyl(phenyl)amino]triphenylamine:tris-[3-(3-pyridyl)mesityl]borane organic light-emitting devices with different electron transporting layer thicknesses, Q Huang et al., Appl. Phys. Lett. 104, 161112 (2014); DIO: 10.1063/1.4870492.
- Metal-Oxide-Free Methylammonium Lead Iodide Perovskite-Based Solar Cells: the Influence of Organic Charge Transport Layers, O. Malinkiewicz et al., Adv. Energy Mater., 4, 1400345 (2014).
- 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).
- Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light- Emitting Diodes, H-H. Kuo et al., Adv.Mater., 29, 1702464 (2017); DOI: 10.1002/adma.201702464.
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