BCPO

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General Information

Product Details

Applications

Bis-4-(N-carbazolyl)phenyl)phenylphosphine oxide - BCPO - is a bipolar host material containing phenylphosphine oxide as an electron withdrawing moeity and two carbazolyl groups as electron donating moieties. BCPO possesses a high triplet energy (E_T ) of 3.01 eV and a high glass transition temperature (T_g) of 137 °C. The phosphine oxide moiety in the middle of the structure can effectively cut off the electron communication between the two N-phenyl carbazole groups, leading to a much higher triplet energy of BCPO than CBP.

Like CBP and mCBP, BCPO can be used as a universal host to blue, green and red fluorescent and phosphorescent devices using simple device architectures.

Device structure	ITO/NPB (10 nm)/TCTA (20 nm)/BCPO:FIr6 (7–8%, 30 nm)/BCP (10nm)/Alq (50 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour	Blue
Max. Luminance	28,718 cd/m2
Max. Current Efficiency	36.8 cd/A
Max. EQE	19.8%
Max. Power Efficiency	33.1 lm W-1

Device structure	ITO/HATCN (4.2 nm)/TAPC (34 nm)/BCPO: 5 wt% p-AC-DBNA* (23 nm)/TmPyPB (21 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour	Sky Blue
Max. Luminance	28,600 cd/m2
Max. Current Efficiency	43.0 cd/A
Max. EQE	19.3%
Max. Power Efficiency	42.3 lm W-1

Device structure	ITO/HATCN (4.2 nm)/TAPC (34 nm)/BCPO: 5 wt% p-AC-DBNA* (23 nm)/TmPyPB (21 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour	Green
Max. Luminance	69,160 cd/m2
Max. Current Efficiency	54.4 cd/A
Max. EQE	19.2%
Max. Power Efficiency	49.8 lm W-1

Device structure	ITO/HATCN (4.2 nm)/TAPC (34 nm)/BCPO: 10 wt% m-AC-DBNA* (23 nm)/TmPyPB (21 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour	Sky Blue
Max. Luminance	24,600 cd/m2
Max. Current Efficiency	42.0 cd/A
Max. EQE	17.1%
Max. Power Efficiency	34.1 lm W-1

Device structure	ITO/NPB(40 nm)/TCTA(10 nm)/TAT-3DBTO2*:BCPO(1:9,30 nm)/TPBi(40 nm)/LiF(1 nm)/Al (100 nm) [3]
Colour	Green
Max. Luminance	10,420 cd/m2
Max. Current Efficiency	50.8 cd/A
Max. EQE	30.9%
Max. Power Efficiency	38.7 lm W-1

Device structure	ITO/NPB (20 nm)/ TCTA (10 nm)/BCPO:Ir(ppy)3 (8% 30 nm)/TPOTP (40 nm)/LiF (1 nm)/Al (100 nm) [4]
Colour	Green
Max. Luminance	115,000 cd/m2
Max. Current Efficiency	97.6 cd/A
Max. EQE	25.2%
Max. Power Efficiency	101 lm W-1

Device structure	ITO/NPB (30 nm)/mCP (20 nm)/BCPO Firpic (8 wt%) (30 nm)/ TPOTP (40 nm)/LiF (1 nm)/Al (100 nm); [4]
Colour	Sky Blue
Max. Luminance	35,600 cd/m2
Max. Current Efficiency	49.1 cd/A
Max. EQE	23.1%
Max. Power Efficiency	41.8 lm W-1

Literature and Reviews

1. A Highly Efficient Universal Bipolar Host for Blue, Green, and Red Phosphorescent OLEDs, H. Chou et al., Adv. Mater., 22, 2468–2471 (2010); DOI: 10.1002/adma.201000061.
2. Isomeric Bright Sky-Blue TADF Emitters Based on Bisacridine Decorated DBNA: Impact of Donor Locations on Luminescent and Electroluminescent Properties, G. Meng et al., Adv. Optical Mater., 7, 1900130 (2019); DOI: 10.1002/adom.201900130.
3. Triazatruxene: A Rigid Central Donor Unit for a D–A3 Thermally Activated Delayed Fluorescence Material Exhibiting Sub-Microsecond Reverse Intersystem Crossing and Unity Quantum Yield via Multiple Singlet–Triplet State Pairs, P. L. dos Santos et al., Adv. Sci., 5, 1700989 (2018); DOI: 10.1002/advs.201700989.
4. A high triplet energy, high thermal stability oxadiazole derivative as the electron transporter for highly efficient red, green and blue phosphorescent OLEDs, C-H. Shih et al., J. Mater. Chem. C, 3, 1491-1496 (2015); DOI: 10.1039/C4TC02348J.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.