Near-Infrared Emitting Platinum(Ii) Phosphors and Fabrication of OLEDs

Project: Research

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Organic light-emitting diodes (OLED) are already widely used in the display industry and are also promising for solid state lighting. Their advantages include high power efficiencies and great color tunability, and showing excellent versatility to yield flexible devices in all kind of sizes and shapes. Importantly, to attain both the full color monitor and white OLEDs, highly efficient emitters exhibiting all three elementary colors of the visible spectrum, i.e., red, green and blue (RGB), are required. The launch of high-end iPhone with OLED panel serve as the landmark, not to mention that similar OLED has already been installed in various 3C products and TVs. This means that the corresponding RGB emitters have already passed the stringent industrial assessments for commercial applications. In addition, there is a growing interest in developing near infrared (NIR) emitting OLEDs, i.e., devices emitting in the 700 - 1400 nm spectral region. Since NIR light cannot be seen by the human eye, this irradiation can be utilized as an invisible light source for communication and night vision devices. Moreover, it can also exert better penetration into human body such as head, arms and legs than visible light with wavelengths between 400 - 700 nm. This is due to the fact that scattering has weak dependence on wavelength; hence, the NIR has large usage window that is limited by the absorption of both blood and water at short and long wavelengths. As a result, NIR-emitting OLED are preferred technology over visible OLED to produce illumination for medical and therapeutic applications. In this proposal, we intend to design and synthesize several Pt(II) metal complexes that are capable to display bright NIR emission upon excitation. 


Project number9042882
Grant typeGRF
Effective start/end date1/01/20 → …