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The laboratory's new perovskite solar cell emits light.
Imagine a future where your smartphone or laptop doesn't need a battery—just sunlight, and you can keep using it. This is no longer science fiction. A groundbreaking study by researchers at Nanyang Technological University (NTU) has shown that their new perovskite-based solar cells not only generate electricity from light but also emit light in different colors. This dual functionality opens up exciting possibilities for the next generation of energy-efficient devices.
Perovskite, a material known for its high efficiency and low production cost, has been at the center of this innovation. Researchers discovered that when exposed to laser light, the hybrid perovskite material they were studying emitted bright light—an unusual property for most solar cell materials, which typically absorb light rather than emit it. This unexpected behavior sparked further investigation into its potential applications.
According to Xing Guichuan, a postdoctoral researcher at NTU, the material’s ability to both capture photons and emit light makes it highly versatile. By adjusting its composition, scientists can control the color of the emitted light, making it ideal for use in displays, lighting, and even smart windows.
Another key advantage of this material is its ease of integration with existing manufacturing techniques. Nipan Matthews, an associate professor at the School of Materials Science and Engineering, highlighted that the material dissolves easily during production and can be combined with other chemicals at room temperature. This not only simplifies the process but also reduces costs by about five times compared to traditional silicon-based solar cells.
"This material is not just a solar cell—it's a multi-functional component," said Matthew. "It can be transparent, allowing it to serve as a window that generates power while letting in natural light. It can also act as a decorative light source outside buildings. Its combination of affordability, versatility, and environmental benefits makes it a game-changer for sustainable architecture."
The team is now working on scaling up the technology for large-scale applications. They believe that this material could revolutionize not only solar energy but also the design of electronic components, especially in chip manufacturing. As Lamamusi Ramesh, a professor at UC Berkeley, noted, "This research demonstrates the vast potential of new materials in shaping the future of energy and technology."
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