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BTB, ETL material in highly efficient OLED devices
Phosphorescent host material for green and red LEDs
BTB, a triazine compound, namely 4,4'-bis(4,6-diphenyl-1,3,5-triazin-2-yl)biphenyl, is used as an electron-transport material in organic light-emitting devices (OLEDs) due to its electron deficiency from the two triazine units.
With electron mobility greater than 10−4 cm2V−1 s−1, BTB demonstrates an electron mobility 10-fold greater than that of the widely-used material tris(8-hydroxyquinoline) aluminum (Alq3). OLEDs incorporating BTB as the electron transport layer exhibit lower driving voltages and higher efficiencies - relative to those incorporating Alq3.
BTB, like other electron-deficient materials (such as T2T), can be used as a phosphorescent host material for green and red light-emitting diodes.
Mapping Recombination Profiles in Single-, Dual-, and Mixed-Host Phosphorescent Organic Light Emitting Diodes, P. Kuttipillai et al., Org. Electron., 57, 28-33 (2018); 10.1016/j.orgel.2018.02.025.
High electron mobility triazine for lower driving voltage and higher efficiency organic light emitting devices, R. Klenkler et al., Org. Electron., 9, 285–290 (2008); doi: 10.1016/j.orgel.2007.11.004.
1,3,5-Triazine derivatives as new electron transport–type host materials for highly efficient green phosphorescent OLEDs, H. Chen et al., J. Mater. Chem., 19, 8112–8118 (2009); DOI: 10.1039/b913423a.
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