Due to the rise in the cost of energy and the emissions associated with it, homeowners have shunned incandescent light bulbs opting for highly energy efficient LEDs and CFL lighting devices. While the change hasn’t still been made all over the world, a team of Swedish researchers at Umea University have produced organic light emitting electrochemical cells (LECs), which can replace conventional OLEDs and LED lights.
The new lighting devices can be produced as inexpensive and extremely thin light-emitting devices that can be used in informative displays at present, with the team seeing a future where they could eventually replace conventional lighting devices which are used in homes and offices. The lighting devices could easily be made using a roll-to-roll compatible process, using conductive polymers such as graphene.
The team has improved the energy efficiency and lifetime of LECs and has demonstrated a point where lifetime operation and energy efficiency would make LECs useful for signage applications. The research also demonstrated that the devices could be manufactured using air-stable materials in a roll-coater machine where a light-emitting layer with an anode could be attached to a cathode substrate mounted on the roll. The best part here is that the final device could be operational at ambient air.