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A Novel Class of Blue PhOLED Emitter Materials

A Novel Class of Blue PhOLED Emitter Materials
Advanced Materials

Key Problem and Market Opportunity

  • OLED are increasingly used to replace LCD as flat panel display technology
  • Phosphorescent emitter materials are preferred over florescent emitter materials in the fabrication of OLED because the external quantum efficiency (EQE) is four times higher 
  • Since the life time of blue phosphorescent emitters are too short for practical applications, current OLED products use red and green phosphorescent emitters and blue fluorescent emitters 
  • There is a desire to develop blue phosphorescent emitters with high EQE and long lifetime 
  • The OLED emitter material market is expected to grow at a CAGR of more than 35% from 2017 to reach US$ 2.5 billion by 2020.

Key Advantages of the Technology

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  • It is a new class of evaporable and solution processable, platinum-based blue-color OLED emitters
  HKU Blue PhOLED emitter
CIE Coordinate 0.14, 0.16
Current Efficiency at 1,000 nits 21.64 cd/A
Power Efficiency at 1,000 nits 13.59 lm/W
External Quantum Efficiency at 1,000 nits 16.61%

Performance Data of Device Prototype (Vacuum Deposited) 

Potential Product and Services

  • High performance blue phosphorescent OLED emitter materials

Development Status and IP Strength

  • US Patent Application No. 15/405,001
  • PCT Application No. PCT/CN2017/071047
  • Device prototype is available at laboratory scale

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