Practical Phosphorescent Platinum and Palladium Materials and Voltage Dependent Color Tunable OLEDs

Professor Che, Chi Ming   (Project Coordinator (PC))

14

2018-09-03

2019-11-30

297920

Practical Phosphorescent Platinum and Palladium Materials and Voltage Dependent Color Tunable OLEDs

Color Tunable, OLEDs, Palladium Materials, Practical Phosphorescent Platinum, Voltage

Others - Chemical Engineering

Physical Sciences (P)

InP/236/18

Innovation and Technology Fund Internship Programme

2017

Completed

Nowadays, phosphorescent OLEDs are dominated by cyclometalated Ir(III)- complexes, the IP of which is solely owned by Universal Display Company (UDC). The over-emphasis on one class of materials and the sky-high patent license fees would undermine the sustainable development of OLED industry, particular in Mainland China. In recent years, we, being one of the pioneers on phosphorescent OLED materials, have developed a novel proprietary Pt-based system of OLED emitters with performances potentially surpass that of the world best Ir-based emitters. Built upon our background, in this project, we plan to undertake strategic R&D work in collaboration with Truly (Hong Kong) and Aglaia(Mainland China) to modify the electroluminescent properties of our Pt-based materials, aiming to use the resultant materials in OLED production lines. Having identified the structural scaffold for the Pt-emitters to work on, in this project, materials with good device performance including long device operation time would be our top priority and would be developed at HKU. The newly developed materials would be sent to Truly for testing under industrial setting. By reviewing the evaluation data, we will address the issue(s)/feedbacks from Truly by fine tuning of the chemical structure of the Pt emitters. After optimization of the materials developed at HKU, Aglaia will prepare the promising materials in large scale for further testing in Truly. As several patents protecting the Pt-based materials described in the present proposal application have been licensed to Aglaia (HKU would have royalty share), she could make use of the knowledge from this collaboration to produce more economic and efficient phosphorescent OLED materials for Truly and other OLED panel manufacturers. We anticipate that new generation of patentable Pt emitters would be developed in the course of the R&D work.