BP4mPy

BP4mPy, one of the most popular ETL and HBL material used in OLEDs

Paired with electron-donating materials to host red, green, and blue PhOLEDs

BP4mPy, namely 3,3',5,5'-Tetra[(m-pyridyl)-phen-3-yl]biphenyl, is one of the most popular electron-transporting and hole-blocking layer materials used in OLEDs. It is electron deficient due to the electron-withdrawing nature of its four pyridine pendants. Together with electron-donating materials (e.g. TCTA), BP4mPy can also be used as an exciplex host for red, green, and blue phosphorescent OLEDs. BP4mPy aids effective energy transfer from exciplexes to emitters, thus leading to high efficiencies.

General Information

Product Details

Chemical Structure

Device Structure(s)

Device structure	ITO (90 nm)/TAPC (65 nm)/TCTA (5 nm)/26DCzPPy:4 wt% B-2PXZ (30 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [2]
Colour	Yellow
Max. Power Efficiency	20.3 lm W−1
Max. Current Efficiency	32.2 cd/A
Max. EQE	10.1%

Device structure	ITO (110 nm)/TAPC (30 nm)/mCP:1.0 wt% Os(bpftz)2(PPhMe2)2* (1 nm)/mCP:8.0 wt% Ir(bptz)2(bdp)* (18 nm)/mCP:7.0 wt% Os(bpftz)2(PPhMe2)2* (1 nm)/BP4mPy (50 nm)/LiF (0.8 nm)/Al (150 nm) [3]
Colour	White
Max. Power Efficiency	10.39 lm W−1
Max. Current Efficiency	13.25 cd/A
Max. EQE	6.16%

Device structure	ITO/TAPC (40 nm)/mCP:Complex 2* 1 wt% (30 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [4]
Colour	Green
Max. Power Efficiency	22.6 lm W−1
Max. Current Efficiency	30.3 cd/A
Max. EQE	10.0%

Device structure	ITO (90 nm)/TAPC:20 wt % of MoO3 (20 nm)/TAPC (30 nm)/26DCzPPy and x wt % PXZBM* (30 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [5]
Colour	Green
Max. Power Efficiency	50.0 lm W−1
Max. Current Efficiency	67.7 cd/A
Max. EQE	22.6%

Device structure	ITO (110 nm)/TAPC (30 nm)/mCP and 8.0 wt% [Os(pz2py)(PPh2Me)2(CO)]* (30 nm)/BP4mPy (50 nm)/LiF (0.8 nm)/Al (150 nm) [6]
Colour	Yellow
Max. Power Efficiency	53.8 lm W−1
Max. Current Efficiency	61.0 cd/A
Max. EQE	13.8%

Device structure	ITO/TAPC (40 nm)/TCTA 46 wt %:BP4mPy 46 wt %:fac-Ir(ppy)3 8 wt % (30 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [7]
Colour	Green
Max. Power Efficiency	42.6 lm W−1
Max. Current Efficiency	48.7 cd/A
Max. EQE	14.1%

Device structure	ITO/TAPC (40 nm)/TCTA 46 wt %:BP4mPy 46 wt %:FIrpic 8 wt % (30 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [7]
Colour	Blue
Max. Power Efficiency	37.9 lm W−1
Max. Current Efficiency	35.6 cd/A
Max. EQE	15.8%

*For chemical structure information, please refer to the cited references

Pricing

MSDS Documentation

BP4mPy MSDS sheet

Literature and Reviews

1. Near infrared-emitting tris-bidentate Os(II) phosphors: control of excited state characteristics and fabrication of OLEDs, J. Liao et al., J. Mater. Chem. C, 3, 4910 (2015); DOI: 10.1039/c5tc00204d.
2. Efficient donor-acceptor-donor borylated compounds with extremely small ΔEST for thermally activated delayed fluorescence OLEDs, C. Tsai et al., Org. Electron., 63, 166–174 (2018); DIO: 10.1016/j.orgel.2018.09.023.
3. Blue-emitting Ir(III) phosphors with 2-pyridyl triazolate chromophores and fabrication of sky blue- and white emitting OLEDs, C. Chang et al., J. Mater. Chem. C, 1, 2639 (2013); DOI: 10.1039/c3tc00919j.