Seoul and Drexel researchers report 17% efficiency in stretchable OLED
A team led by Seoul National University and Drexel University has developed a fully stretchable OLED with a reported external quantum efficiency of 17%, a record for this type of display, according to Seoul National University. The Nature study combines a light-emitting layer with stretchable electrodes using MXene, and reports that the display stretches to 1.6 times its original length while retaining most of its brightness.
Bottom line — The researchers report 17% efficiency, but further work is needed before stretchable OLEDs reach mass production.
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Seoul National University says earlier fully stretchable OLEDs reached about 6.8% efficiency; rigid commercial OLEDs have exceeded 30%.
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Drexel University reports that the display retained 83% of its light output after 100 stretching cycles.
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The electrode pairs MXene with silver nanowires to improve how electrical charge reaches the light-emitting layer, according to Drexel University.
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The team also built a full-colour stretchable prototype and low-power passive-matrix displays, ScienceDaily reports.
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The researchers identify wearable displays and skin-mounted health monitors as potential applications; the work remains at the research stage.