PPDN, ETL and HIL material in organic electronic devices
Paired with HATCN to improve device performance
PPDN has a chemical structure of phenanthroline in conjugation with dicarbonitrile-substituted pyrazine. As PPDN is electron-deficient, it can be used as an electron-transport layer (ETL) or hole-injection layer (HIL) material in organic electronic devices.
PPDN can be used as an additive to prevent HATCN crystallisation while it is solution processed. Films prepared from a mixture of PPDN and HATCN have been shown to have a transparent appearance. Furthermore, devices using HATCN and PPDN together showed a lower driving voltage and higher luminescence efficiency when compared to devices made using HATCN alone.
|Molecular weight||282.26 g/mol|
|Absorption||λmax 307 nm in DCM|
|Fluorescence||λmax 487 nm in DCM|
|HOMO/LUMO||HOMO = 7.47 eV, LUMO = 3.41 eV (DFT)|
|Classification / Family||Electron transport layer (ETL) materials, Hole injection layer (HIL) materials, Sublimed materials, Organic electronics.|
|Purity||Sublimed >99% (HPLC)|
|Melting point||TGA: > 270 °C (0.5% weight loss)|
|Sublimed (>99% purity)||M2187A1||250 mg||£290|
|Sublimed (>99% purity)||M2187A1||500 mg||£480|
|Sublimed (>99% purity)||M2187A1||1 g||£850|
Literature and Reviews
- Novel materials for fabrication and encapsulation of OLEDs, N. Kalyani et al., Renew. Sust. Energ. Rev., 44, 319–347 (2015); doi: 10.1016/j.rser.2014.11.070.
- Inhibition of solution-processed 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile crystallization by mixing additives for hole injection layers in organic light-emitting devices, S. Ohisa et al., Poly. J., 49, 149–154 (2017); doi: 10.1038/pj.2016.92.
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