For comparison, a typical 27-inch 4K gaming monitor has a pixel density of just 163 PPI.
Unlike conventional micro-LEDs, nano-PeLEDs exhibit minimal performance degradation even at microscopic scales.
“Halide perovskites are a new class of semiconductors,” noted Professor Zhao Baodan of Zhejiang University.
Creating nano-PeLEDs, however, was no simple task.
Perovskite materials are notoriously fragile and susceptible to damage during conventional photolithographic processes used to pattern LED displays.
This technique protects the delicate perovskite material while preserving high image quality.
“This problem is overcome by our localized contact fabrication scheme.”
This suggests that nano-PeLEDs could outperform III-V semiconductor-based micro-LEDs in applications requiring ultra-small pixels.
Together, they developed a prototype active-matrix micro-PeLED display driven by a TFT backplane.
This prototype is crucial to commercializing nano-PeLED technology and unlocking its potential for complex images and video playback.
As researchers continue refining this technology, its potential applications are rapidly expanding.
