Colorado-based start-up Coled has given further details of its electrode modification which increases the efficiency of OLED displays.

“We have a self-assembly system which acts as an energy-adjusting barrier layer between organic and inorganic at the hole-injection electrode,” Coled chief scientist and CEO Dr Neil Gough told Electronics Weekly.

This means it is deposited on an ITO electrode before the light-emitting polymer or small-molecule emitter is laid down. Compared to a display without the barrier layer, at the same current “you get the same brightness at a lower voltage drop”, claimed Gough.

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