3-BPIC is a symmetric self-assembled monolayer (SAM) compound used as a hole transport or hole extraction layer in non-fullerene acceptor polymer solar cells and p-i-n perovskite solar cells. Its structure has two phosphonic acid anchors, two propanyl spacers and a single indolo[2,3-a]carbazole (IDCz) terminal group. The anchors bind to an electrode surface such as ITO, the spacers keep the anchors apart from the terminal, and the terminal sits against the photoactive layer to carry holes efficiently.
Forming a monolayer between anode and active layer, 3-BPIC works as a hole-selective contact that helps extract holes while blocking electrons, which improves device performance and operational stability. The bipodal biphosphonic acid design gives a relatively larger dipole moment and better compatibility with the active layer. Non-fullerene devices with a PM6 : L8-BO : BTP-ec9 (1:1:0.3 w/w) active layer and a 3-BPIC interface reached a power conversion efficiency of 19.34%.
The material is offered as an alternative to PEDOT:PSS and can be deposited from solution at low concentration, around 1 mM, in solvents such as ethanol, methanol, IPA, DMF or THF. It is supplied as a white powder or crystals with purity above 98% (HPLC).
- Hole-selective self-assembled monolayer on ITO electrodes in p-i-n perovskite solar cells.
- Hole transport or extraction layer in non-fullerene acceptor polymer organic solar cells.
- Replacement for PEDOT:PSS as the hole-selective contact in organic photovoltaic devices.
- Interface engineering studies on anode/active layer contacts using spin-coated monolayers.
| Brand | Ossila |
|---|---|
| CAS number | 3038707-49-9 |
| Molecular formula | C24H26N2O6P2 |
| Purity | > 98% (HPLC) |
| Category | — |
| Pack sizes | 250 mg, 500 mg, 1 g |
| Physical form | White powder/crystals |
| Storage | — |
- Product code: M2465A1
- Molecular Weight: 500.42 g/mol
- Absorption: λmax = 329 nm (in film)
- HOMO/LUMO: HOMO = 5.25 eV, LUMO = 0.96 eV
- Synonyms: IDCz-2, (Indolo[2,3-a]carbazole-11,12-diylbis(propane-3,1-diyl)diphosphonic acid
- Typical Solvents: Ethanol, methanol, IPA, DMF, THF
- Typical Concentration: 1 mM - 1.0 mg/ml
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