Colloidal nanocrystal-based light-emitting diodes fabricated on plastic toward flexible quantum dot optoelectronics
2009
We report the demonstration of mechanically flexible quantum dot light emitting diodes (QD-LEDs) of all three primary colors (red, green, and blue). The QD-LEDs have been fabricated over poly(ethylene-terephthalate) substrates and exhibited high brightness, saturated colors, and pronounced flexibility with a critical bending radius of ∼5 mm. The efficiencies of the flexible QD-LEDs are comparable with the devices fabricated on rigid substrates, suggesting the intrinsic flexibility of quantum dot-based optoelectronic devices.
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