Out of its three isomers, 4CzIPN has the highest photo-luminescence quantum efficiency (PLQY) of above 90%. This is due to the wide dispersion the highest-occupied molecular orbital (HOMO) over the donor moieties. Relatively short excited-state lifetime of delayed emission was reported. Additionally, higher external quantum efficiency (EQE) was observed by using 4CzIPN as an emitter in TADF-OLED devices.
Despite its low solubility in most of the aromatic solvents, 4CzIPN is also solution-processable in solvents such as dichloromethane or chloroform. This is due to the structure distortion of the carbazole units caused by steric hindrance.
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.
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To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.