Near-Infrared Emitting Platinum(II) Phosphors and Organic Light Emitting Diodes Thereof
DescriptionOrganic semiconductors with emission max. spanning the near infrared (NIR) region from 700 nm to 1000 nm are potentially useful in making OLED devices aimed for bio-sensing, imaging and therapeutic applications, a result of better penetration and less damaging to human tissues. Moreover, NIR emission can be served as the useful lighting sources of integrated communication networks, for its invisibleness to human eyes and with extended bandwidth. Despite of having many potential applications, due to the reduced energy gap, majority of NIR emitting materials exhibit poor luminescence efficiency with respect to their visible counterparts. This is attributed to the increased radiationless deactivation processes, a result of the increased overlap between the lowest and highest vibrational mode of the excited and ground state manifolds, respectively. This obstacle will be tackled by designing a series of Pt(II) metal complexes with the well-ordered solid-state stacking interaction, which can effectively block this nonradiative transition processes, based on our studies of the Energy Gap Law. Hence, with the possession of relevant Pt(II) metal emitters, we would push forward the likelihood of practical applications for NIR OLEDs.
|Effective start/end date||1/07/21 → …|