Brighter Perovskite LEDs: New Crystal Strategy
- Scientists in China have developed a new approach to creating all-inorganic perovskite films for light-emitting diodes (LEDs), achieving unprecedented brightness and longevity.
- Their strategy focuses on weakly space-confined, large-grain crystals.
- The resulting perovskite LEDs (PeLEDs) exhibit a luminous efficiency exceeding 22%, comparable to commercial displays.
Chinese scientists have revolutionized LED technology. Using a novel crystal strategy,they’ve produced perovskite LEDs that smash previous brightness and lifespan records. This innovative approach, detailed in Nature, focuses on weakly space-confined, large-grain crystals, which dramatically enhances the efficiency and stability of perovskite films. The team, led by Professor Xiao Zhengguo, achieved a stunning 1.16 million nits of brightness and an astonishing 180,000-hour lifespan for the LEDs. This advancement has significant implications for future high-end displays, possibly surpassing commercial standards.News Directory 3 is closely following this exciting advancement,as these brighter,longer-lasting LEDs could soon reshape display technology,including ultra-high-brightness lighting.Discover what’s next for this display technology.
novel Crystal Strategy Yields Brighter, longer-Lasting perovskite LEDs
updated June 11, 2025
Scientists in China have developed a new approach to creating all-inorganic perovskite films for light-emitting diodes (LEDs), achieving unprecedented brightness and longevity. The team from the University of Science and Technology of China (USTC), led by Prof.Xiao Zhengguo, published their findings in Nature.
Their strategy focuses on weakly space-confined, large-grain crystals. By adding hypophosphorous acid and ammonium chloride to the perovskite material and using a high-temperature annealing process, they created thin films with larger crystalline grains and fewer defects. This process suppresses non-radiative recombination and reduces ion migration, boosting the stability and brightness of the perovskite films.
The resulting perovskite LEDs (PeLEDs) exhibit a luminous efficiency exceeding 22%, comparable to commercial displays. They reach a maximum brightness of 1.16 million nits, substantially higher than typical commercial LED screens. Furthermore, these PeLEDs can theoretically operate for over 180,000 hours at a normal brightness of 100 nits, meeting commercial standards.
This novel strategy overcomes limitations in efficiency and stability, paving the way for wider application of perovskite LEDs in high-end displays and ultra-high-brightness lighting.
More facts:
Chenchen Peng et al, Weakly space-confined all-inorganic perovskites for light-emitting diodes, Nature (2025). DOI: 10.1038/s41586-025-09137-1
What’s next
The researchers anticipate that this breakthrough will spur further advancement and adoption of perovskite LEDs in various advanced display technologies.