19 May 2008 - Los Angeles, US - OLED-T, a developer and manufacturer of world-class organic light emitting diode (OLED) materials and device structures, today staked out its leadership in OLED electron injector and transport materials.
Professor Poopathy Kathirgamanathan, CTO, OLED-T will present a paper 'Charge Transporters for OLED's: Strategies and Performance' reviewing characterisation results for OLED-T's electron injector and transport materials.
OLED displays are manufactured from a sandwich of different materials including two different electron charge transport layers namely the electron injector and electron transport layers. The charge transport layers are critical layers within the make-up of an OLED-T display responsible for 60 per cent of the power loss and fundamental to the device voltage and lifetime.
In addition to optimising power consumption, device voltage and lifetime, OLED-T is focused on reducing the manufacturing temperature of its family of charge injector and electron transport materials. Reducing the manufacturing temperature of OLED materials cuts the cost of manufacture and the potential damage to the underlying layers of the display, thereby improving the lifetime and voltage drift over the lifetime of the OLED device.
"OLED-T has the industry's leading electron injector and transport materials. The chemistry, device development and commercial teams have worked really hard during the last 12 months and made significant progress," said Myrddin Jones, CEO, OLED-T.
OLED-T has made important advances across its ranges of OLED materials and several new OLED materials launched:
- EI-101 is OLED-T's first generation low temperature direct replacement for Lithium Floride (LiF), the material typically used by manufactures as the electron injector layer within an OLED display. In customer trials using EI-101 as a direct replacement for lithium fluoride in displays the electrical efficiency was improved by as much as 15 per cent and the lifetime of the display increased by up to 15 per cent.
- EI-111-2Me a direct replacement for the Lithium Floride (LiF) as the electron injector layer within OLED displays enables display manufacturers to improve efficiency and, as well as reduce the operating voltage and minimising voltage drift. In customer trials using EI-111 as a direct replacement for LiF, display efficiency improved by 25 per cent and lifetime by 10 per cent.
- In customer characterisation trials OLED-T's new electron injector material named E225 had a 66.3 per cent performance improvement in brightness and a 30 per cent reduction in driving voltage when compared with materials typically used as the industry benchmarks.
- E246 is OLED-T's first generation replacement for Aluminium Quinolate (Alq3), the electron transport layer most commonly used throughout the OLED industry. The material is a like-for-like replacement in manufacturing lines for Alq3 and provides a high mobility, highly thermally stable electron transport layer suitable for the manufacture of organic light emitting diodes (OLEDs).
- E278ST provides manufacturers with a lower toxicity, lower voltage, higher electroluminescent efficiency, longer lifetime and lower voltage drift when used as a replacement for aluminium quinolate (Alq3), the material commonly used as the electron transport layer in OLED displays. In customer trials, OLED-T has demonstrated a two-fold increase in device lifetime and a 25 per cent reduction in device voltage.