Bright future for OLEDs

An iridium complex has been developed as a red-light emitting material for use in organic light emitting diodes (OLED).

Shinjiro Okada and co-workers from the Canon Company in Atsugi, Japan, fine-tuned substituents of the ligand 1-phenylisoquinoline to optimise their design for a red phosphorescent iridium complex.

Research over the last 15 years has focused on OLED displays as replacements for liquid crystal displays (LCDs) in the flat panel industry, covering everything from watches to flat-screen TVs. They are especially suited for mobile devices like phones and digital cameras.

Advantages of OLEDs include low power usage, a wide viewing angle and small size. OLEDs emit their own light and give brighter, sharper images than LCDs.

Okada thinks future work will be aimed at blue phosphorescent materials.

Helen Lunn