35DCzPPy, one of the most common bipolar host materials used in OLEDs
High-purity (>98.0%) and available online for priority dispatch
Combining a carbazole electron donor with high triplet energy, and a pyridine electron acceptor with high electron affinity, 3,5-bis(3-(carbazol-9-yl)phenyl)pyridine (35DCzPPy) is one of the most common bipolar host materials used in organic light-emitting diodes.
35DCzPPy is an isomer of 26DCzPPy, differing in the position of functionalisations of the central pyridine ring. 35DCzPPy is more electron-rich, so 26DCzPPy has a more balanced hole and electron injection and transport than 35DCzPPy.
Bipolar host materials are the molecules composed of an electron-donating moiety, capable of mediating hole injection and transportation; and an electron-withdrawing moiety capable of mediating electron injection and transportation.
|Molecular weight||561.67 g/mol|
|Absorption||λmax 307 nm, 317 nm (in CH2Cl2)|
|Fluorescence||λem 347 nm (in CH2Cl2)|
|HOMO/LUMO||HOMO = 6.18 eV, LUMO = 2.75 eV |
|Classification / Family||Carbazole derivatives, Bipolar charge transport layer materials, Phosphorescent host materials, OLEDs, Organic electronics|
|Melting point||TGA > 290 °C (0.5% weight loss)|
|Device structure||ITO (130 nm)/35DCzPPy:MoO3 (30 nm)/35DCzPPy (10 nm)/ 35DCzPPy:12 wt.% FIrpic (30 nm)/35DCzPPy (10 nm)/ 35DCzPPy:Cs2CO3 (20 nm)/Al (80 nm) |
|EQE @ 100 cd/m2||16.9%|
|Current Efficiency @ 1000 cd/m2||27.2 cd/A|
|Power Efficiency @ 1000 cd/m2||19.6 lm/W|
|Device structure||ITO/TPDPES*:TBPAH* (20nm)/3DTAPBP* (30nm)/35DCzPPy:11 wt % FIrpic (10nm)/TmPyPBP (40nm)/LiF (0.5 nm)/Al (100 nm) |
|EQE @ 100 cd/m2||19.1%|
|Power Efficiency @ 100 cd/m2||34.6 lm/W|
|Device structure||ITO (130 nm)/35DCzPPy:MoO3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:10 wt.% Ir(ppy)3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:Cs2CO3 (20 nm)/Al (80 nm) |
|EQE @ 100 cd/m2||1.5%|
|Power Efficiency @ 100 cd/m2||3.2 lm W−1|
|Device structure||ITO (130 nm)/35DCzPPy:MoO3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:4 wt.% Ir(piq)3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:Cs2CO3 (20 nm)/Al (80 nm) |
|EQE @ 100 cd/m2||7.0%|
|Power Efficiency @ 100 cd/m2||2.7 lm W−1|
*For chemical structure informations please refer to the cited references.
Literature and Reviews
- High-efficiency red, green and blue phosphorescent homojunction organic light-emitting diodes based on bipolar host materials, C. Cai et al., Org. Electronics 12, 843-850 (2011); doi:10.1016/j.orgel.2011.01.021.
- Pyridine-Containing Bipolar Host Materials for Highly Efficient Blue Phosphorescent OLEDs, S. Su et al., Chem. Mater., 20, 1691–1693 (2008); DOI: 10.1021/cm703682q.
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