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Scientists develop ultra-bright LEDs that could last over 20 years
- Scientists have developed a new method to enhance perovskite light-emitting diodes (PeLEDs), a technology known for its brightness and low cost.
- This breakthrough could lead to more durable and energy-efficient LED screens and lighting.
- Perovskites have strong light-emitting abilities but face challenges in efficiently combining electrons and holes to produce light.
- Traditional methods to improve efficiency involve making perovskite crystals smaller, but this reduces stability and lifespan.
- The USTC team took a different approach, creating larger and more stable crystals by adding special ingredients and using high-temperature treatment.
- The new PeLEDs achieved a luminous efficiency of over 22%, matching or surpassing commercial LED displays.
- They also reached a peak brightness of 1.16 million nits, significantly higher than current LED screens.
- At normal brightness levels, these PeLEDs could last over 180,000 hours, equivalent to more than 20 years of continuous use.
- The improved crystal quality enhances efficiency and lifespan, making PeLEDs suitable for high-end displays and ultra-bright lighting applications.
- This breakthrough could enable the use of perovskites in future TVs, smartphones, stadium lighting, and outdoor billboards.
- Perovskite LEDs may soon transition from the lab to everyday use, transforming lighting and display technologies.
- The research was led by the University of Science and Technology of China and published in Nature.
- The new method addresses longstanding issues with efficiency and lifespan in PeLEDs.
- The simple and scalable approach to improving crystal quality opens up new possibilities for various applications.
- Perovskite LEDs are poised to revolutionize how we illuminate and view the world.
- The development was supported by the Chinese Academy of Sciences.
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