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The lab's latest breakthrough involves a perovskite solar cell that can emit light.
Imagine a future where your phone or computer doesn’t need a separate battery—just sunlight, and you’re good to go. This is no longer science fiction, thanks to a recent breakthrough by scientists at Nanyang Technological University (NTU), published in the journal "Nature Materials." Their next-generation solar cell material not only converts light into electricity but also emits colorful light on demand.
The material used in this development is perovskite, a promising substance known for its high efficiency and low cost in solar technology. On March 25, according to Phys.org, Xing Guichuan, a postdoctoral researcher at NTU’s School of Physics and Materials Science, discovered that a hybrid perovskite material emitted bright light when exposed to laser light. This was unexpected, as most solar cell materials are designed to absorb light, not emit it.
Researchers believe this material has great potential due to its ability to both capture photons and emit light. By tweaking its composition, it can produce various colors, making it ideal for use in displays and lighting systems.
Nipan Matthews, an associate professor at NTU’s School of Materials Science and Engineering, noted that the material is easy to integrate with existing technologies. It dissolves well during production and can be combined with other chemicals at room temperature, making it five times cheaper than traditional silicon-based solar cells.
“This material can be made transparent, allowing it to function as smart glass on windows that generate electricity while letting in natural light,†said Matthews. “Its light-emitting properties also make it perfect for outdoor signage, like in shopping malls or office buildings.†He added that the material’s versatility and affordability could significantly contribute to green building initiatives.
The team is now working on scaling up the technology for large-scale solar cells. They also believe that the material’s response to laser radiation could have important implications for chip electronics.
Currently, the material is being patented. Professor Lamamusi Ramesh from the University of California, Berkeley, praised the research, stating, “This work clearly demonstrates the broad applications of new materials, not just in solar cells, but also in lasers and beyond.â€
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