Highly Efficient Vacuum-Deposited Gold-Based OLEDs Towards Practical Operational Stability

Professor Yam, Vivian Wing Wah   (Project Coordinator (PC))

Dr Chan Mei Yee   (Co-Investigator)

36

2019-12-01

2022-11-30

15989858

Highly Efficient Vacuum-Deposited Gold-Based OLEDs Towards Practical Operational Stability

Gold-Based, Highly Efficient, OLEDs, Practical Operational Stability, Vacuum-Deposited

Chemical Sciences

Physical Sciences (P)

ITS/299/19FP

Innovation and Technology Support Programme (Tier 2)

2019

Completed

The project aims to develop new classes of robust and thermally evaporable gold(III) complexes with tunable emission colours for the applications of high-performance vacuum-deposited OLEDs, based on the recent successful demonstration by the Principal Investigator of a novel class of gold(III) C^C^N complexes that exhibit superior electroluminescence (EL) performance with external quantum efficiencies of up to 21.6 % as well as the first report on long operational lifetimes of up to 83,000 hours. The present project focuses on the design and synthesis of thermally stable and evaporable gold(III) complexes with tunable photoluminescence colours spanning over the entire visible spectrum, where the EL performance and operational lifetimes of colourful vacuumdeposited OLEDs and white-emitting OLEDs (WOLEDs) based on the proprietary gold(III) complexes will be explored. The present project not only will offer a new class of robust and thermally evaporable gold(III) complexes, but can also generate Hong Kong-owned intellectual property rights and important technological know-how for knowledge and technology transfer. Working closely with our sponsors in Hong Kong and the Mainland, this technology can no doubt facilitate and motivate more downstream R&D and commercialization activities, and holds great promise to make full use of the rich gold reserves in China and possibly overturns the business monopolies dominated by the foreign materials suppliers.