CAS Number 164724-35-0
×10−2 cm2/V⋅s, enabling rapid hole-extraction from the adjacent donor layer. This results in an enhanced open-circuit voltage and leads to an improvement of powder conversion efficiency (PCE) of 9% with reference devices.
BPBPA is commonly used as a hole transport layer (HTL) material in OLEDs. The molecule has a highest occupied molecular orbital (HOMO) energy value at −5.5 eV and a lowest unoccupied molecular orbital (LUMO) energy value at −2.0 eV. The work function of BPBPA conveniently matches with other materials, making it suitable as a reference HTL in the investigation of high-efficiency fluorescent emitters.
| CAS Number | 164724-35-0 |
|---|---|
| Full Name | N,N,N',N'-Tetra(4-biphenylyl)-4,4'-biphenyldiamine |
| Chemical Formula | C60H44N2 |
| Molecular Weight | 793.03 g/mol |
| Purity | Sublimed >99.5% (HPLC) |
| Charge Carrier Mobility | μ = 1.74 × 10−2 cm2/V⋅s [1] |
| HOMO/LUMO |
HOMO = −5.5 eV LUMO = −2.0 eV [1] |
| Melting Point | Tm = 265 °C |
| Appearance | Off-white powder |
| Synonyms | N,N,N',N'-Tetrakis(4-biphenylyl)benzidine, N4,N4,N4',N4'-Tetra[(1,1'-biphenyl)-4-yl]-(1,1'-biphenyl)-4,4'-diamine, N,N'-Tetra(4-biphenyl)benzidine, 4-Phenyl-n-(4-phenylphenyl)-N-[4-[4-(4-phenyl-N-(4-phenylphenyl)anilino)phenyl]phenyl]aniline, TBB, TBBDA |
| Classification or Family | Hole transport layers, Hole extraction materials, Sublimed materials, Semiconducting molecules, Benzidines, OLEDs, Solar cells |
N,N,N',N'-Tetra(4-biphenylyl)-4,4'-biphenyldiamine (BPBPA) chemical structure, CAS 164724-35-0
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