BCBP

2,2'-bis(4-(carbazol-9-yl)phenyl)-biphenyl (BCBP) has a bridged biphenyl structure with two electron rich carbazolyl pendant moieties. The bridged structure is believed to enhance the conjugation and raise the HOMO energy level, facilitating hole-injection and leading to low turn-on voltages in organic photoelectroluminescent devices.

Comparing with 4,4′-(bis(9-carbazolyl))biphenyl (CBP), a well known host material, BCBP is thermally more stable with a high glass transition temperature (T_g) of 173 °C, while CBP has a relatively low T_g of 69 °C.

Carbazolyl groups are largely embedded in both fluorescent and phosphorescent host materials because of their higher triplet energy levels and higher hole mobility. Like the rest of the family members such as CDBP and mCBP, BCBP is commonly used as host material for blue, green, red phosphorescent dopants for highly efficient OLED devices.

General Information

* Measurable with an optical spectrometer, see our spectrometer application notes.

Product Details

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

Device Structure(s)

Device structure	ITO/TPDPES:TBPAH (20 nm)/BTPD (20 nm)/BCBP:15%FIrpic (30 nm)/DPPS (30 nm)/LiF (0.5 nm)/Al (100 nm) [1]
Colour	Blue
Max. Luminance	10,578 cd/m2
Max. Current Efficiency	50.5 cd/A
Max. EQE	22.0%
Max. Power Efficiency	47.0 lm W-1

Device structure	ITO/MoO3/TAPC/Ir(dpm)(piq)2(4%):BSB/Eu(TTA)3Phen*(0.3%):Ir(dpm)(piq)2(4%):BCBP/TPBi/LiF/Al
Colour	Red
Max. Luminance	63,110 cd/m2
Max. Current Efficiency	61.71 cd/A
Max. Power Efficiency	64.59 lm W-1

Device structure	ITO/MoO3/TAPC/mer-Ir(Pmb)3(9%):BSB/Tm(acac)3Phen*(0.3%):mer-Ir(Pmb)3(9%):BCBP/TPBi/LiF/Al
Colour	Blue
Max. Luminance	20,095 cd/m2
Max. Current Efficiency	30.08 cd/A
Max. Power Efficiency	37.56 lm W-1

Device structure	ITO/MoO3/TAPC/Ir(ppy)2(m-bppy)(9%):Ir(piq)2(acac)(3%):BSB/Tm(acac)3Phen(0.3%):mer-Ir(pmb)3(25%):BCBP/TPBi/LiF/Al
Colour	White
Max. Luminance	43,122 cd/m2
Max. Current Efficiency	60.55 cd/A
Max. Power Efficiency	63.18 lm W-1

Pricing

MSDS Documentation

BCBP MSDS sheet

Literature and Reviews

1. Nearly 100% Internal Quantum Efficiency in an Organic Blue-Light Electrophosphorescent Device Using a Weak Electron Transporting Material with a Wide Energy Gap, L Xiao et al., Adv. Mater., 21, 1271–1274 (2009); DOI: 10.1002/adma.200802034.
2. Diarylmethylene-bridged 4,4′-(bis(9-carbazolyl))biphenyl: morphological stable host material for highly efficient electrophosphorescence, Z. Jiang et al., J. Mater. Chem., 19, 7661-7665 (2009); DOI: 10.1039/B910247G.
3. Towards Highly Efficient Blue-Phosphorescent Organic Light-EmittingDiodes with Low Operating Voltage and Excellent Efficiency Stability, C. Han et al., Chem. Eur. J., 17, 445 – 449 (2011); DOI: 10.1002/chem.201001981.
4. Organic host materials for phosphorescent organic light-emitting diodes, Y. Tao et al., Chem. Soc. Rev., 40, 2943-2970 (2011); DOI: 10.1039/C0CS00160K.

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.