Inexpensive Metal Complexes For OLED Application

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

10

2017-01-01

2017-11-20

264600

Inexpensive Metal Complexes For OLED Application

Inexpensive Metal Complexes, OLED Application

Others - Physical Sciences

Physical Sciences (P)

InP/305/16

Innovation and Technology Fund Internship Programme

2015

Completed

Over the past decades, Prof. Che has developed serials of phosphorescent materials for OLED, which have been protected by patents. These materials show excellent performance in OLED, the patents of which have been licensed to Chinese and Germany companies as well as to Samsung. We are currently collaborating with Samsung to optimize the phosphorescent platinum(II) materials for industrial use. Besides platinum(II) complexes, recently, Prof. Che has embarked a program to develop luminescent metal complexes of inexpensive earth abundant metals for OLED applications: 1. Luminescent copper(I) and zinc(II) based complexes have been designed and prepared. OLED with external quantum efficiency up to 15.6% has been fabricated. 2. Air stable tungsten(VI) complexes having good thermal stability and emission quantum yields up to 22% have been prepared and characterized. Herein, we propose to optimize the materials properties of the aforementioned luminescent copper(I) and tungsten(VI) complexes for eventual practical applications. The chemical structures of the ligands used for coordination to copper and tungsten will be modified for obtaining new complexes with improved emission quantum efficiency and / or emission colour. Efforts will also be put to develop new copper(I) complexes with stability good enough for thermal deposition. Patents have been filed/ will be filed to protect the present and new findings.