BCzPh, or 9,9'-Diphenyl-9H,9'H-3,3'-bicarbazole (CAS 57102-62-2), is an electron-rich host material built from two conjugated carbazole units. It is supplied by Ossila in sublimed grade with a purity above 99.0% (HPLC) as off-white crystals or powder, and is intended for phosphorescent organic light-emitting diodes (PhOLEDs).
Because it is electron-rich, BCzPh also serves as an electron donor for exciplex formation, acting either as the emitting layer or as the host in fluorescent and phosphorescent OLEDs. Joining the carbazoles blocks the 3 and 3'-positions, which strongly suppresses host-host aggregation and the excimer formation it causes. Its Tg of 100 °C helps thin films stay thermally and morphologically stable.
BCzPh is an isomer of CBP and mCBP, both widely used universal hosts for blue, red, green and white electroluminescent OLEDs. Reported devices using BCzPh include blue FIrpic-based PhOLEDs reaching a max EQE of 19.8% at 100 cd/m2 and green exciplex-hosted Ir(ppy)2(acac) devices with a max EQE of 25.8%.
- Host material for the emissive layer of phosphorescent OLEDs.
- Electron donor for forming exciplexes in emitting layers or exciplex hosts.
- Host for blue phosphorescent emitters such as FIrpic.
- Host for green and yellow phosphorescent emitters such as Ir(ppy)2(acac) and PO-01.
- Research into thermally and morphologically stable organic semiconductor thin films.
| Brand | Ossila |
|---|---|
| CAS number | 57102-62-2 |
| Molecular formula | C36H24N2 |
| Purity | Sublimed >99.0% (HPLC) |
| Category | — |
| Pack sizes | 250 mg, 500 mg, 1 g |
| Physical form | Off-white crystals/powder |
| Storage | — |
- Product code: M2119A1
- Full name: 9,9'-Diphenyl-9H,9'H-3,3'-bicarbazole
- Molecular weight: 484.59 g/mol
- Thermal stability: TGA: 340 °C (0.5% weight loss)
- Glass transition temperature: Tg = 100 °C
- Absorption: λ max 303 nm in DCM
- Fluorescence: λ max 391, 408 nm in DCM
- HOMO/LUMO: HOMO 5.67 eV, LUMO 2.3 eV
- Classification: Carbazole derivatives, Light-emitting diodes, Organic electronics, PHOLED host materials, Sublimed materials
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