Ossila M791 is the sublimed grade of HATCN (1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile, also called HAT-CN6), CAS 105598-27-4, supplied at a purity above 99.0%. It is an organic semiconductor used mainly as a hole-injection layer (HIL) or charge-generation layer (CGL) material in organic light-emitting diodes.
HATCN belongs to the hexaazatriphenylene (HAT) family. Its molecules form a rigid, flat, electron-poor aromatic disc that stacks strongly through π–π interactions, which underpins its charge-handling role in layered devices. The material is a dark yellow powder or crystalline solid with a molecular weight of 384.27 g/mol and shows 0.5% weight loss at 430 °C by TGA.
Published work shows that a solution-processed HAT-CN hole-injection layer can match or exceed optimized PEDOT:PSS layers in external quantum efficiency, current efficiency and power efficiency. Because it injects carriers efficiently and helps stop layers from mixing or eroding during fabrication, it is considered a candidate replacement for PEDOT:PSS. It has been reported in PEDOT:PSS-free green, blue, sky-blue, red and white OLEDs, including tandem devices.
- Hole-injection layer (HIL) in vacuum-deposited and solution-processed OLEDs.
- Charge-generation layer (CGL) in tandem OLED stacks, for example combined with TAPC.
- PEDOT:PSS-free device architectures for phosphorescent and hybrid white OLEDs.
- Research on perovskite quantum-dot light-emitting diodes and perovskite solar cells.
- Buffer layers in inverted top-emitting OLEDs.
| Brand | Ossila |
|---|---|
| CAS number | 105598-27-4 |
| Molecular formula | C18N12 |
| Purity | Sublimed >99.0% |
| Category | — |
| Pack sizes | 500 mg, 1 g, 5 g |
| Physical form | Dark yellow powder/crystals |
| Storage | — |
- Product code: M791
- Molecular Weight: 384.27 g/mol
- Absorption: λ max 282, 321 nm (in CH2Cl2)
- Fluorescence: λ em 422 nm (in CH2Cl2)
- HOMO/LUMO: HOMO 7.5 eV, LUMO 4.4 eV
- Thermal Gravimetric Analysis (TGA): 430 °C (0.5% weight loss)
- Synonyms: HAT-CN6, HATCN, Dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile
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