High-res nanoimprint patterning of quantum-dot LEDs via capillary self-assembly
5 days ago
- #Quantum Dots
- #High-Resolution Displays
- #Nanoimprint Lithography
- Researchers developed a nanoimprint strategy using nanohole-array molds to fabricate ultrahigh-resolution quantum-dot light-emitting diodes (nano-QLEDs).
- The method enables pixel sizes as small as sub-100 nm with a resolution of up to 169,333 pixels per inch (PPI) over a 4 mm² electroluminescent area.
- Nano-QLEDs maintain high external quantum efficiencies (EQEs) of 17.0% (red), 10.5% (green), and 5.7% (blue) even at the smallest pixel sizes.
- The technique was demonstrated on flexible substrates and integrated into an active-matrix display with a resolution of 100 × 180 pixels.
- The closely packed quantum-dot monolayers minimize performance degradation when reducing pixel size, making it suitable for next-generation displays.