Near-invisible solar cells that could turn windows into power generators
Scientists from NTU Singapore have developed near-invisible ultrathin solar cells that could enable windows to generate power. These perovskite solar cells are significantly thinner than traditional options and maintain high power conversion efficiencies. The technology could be integrated into buildings and vehicles, potentially transforming urban environments into energy-generating assets.
- ▪The new solar cells are about 10,000 times thinner than a human hair and 50 times thinner than conventional perovskite solar cells.
- ▪They can generate electricity even under indirect sunlight, making them suitable for urban environments with limited direct solar exposure.
- ▪Preliminary estimates suggest that deploying this technology on large glass façades could generate several hundred megawatt-hours of electricity annually.
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Published on 14 May 2026 Near-invisible ultrathin solar cells that could turn windows into power generators Imagine a car whose windows and sunroof can help top up its battery while parked under the sun, or a pair of smart glasses whose lenses can harvest light to power built-in electronics.Such applications could become more feasible with a new type of ultrathin transparent solar cell developed by scientists from NTU Singapore.Led by Associate Professor Annalisa Bruno, the NTU researchers created perovskite solar cells that are about 10,000 times thinner than a strand of human hair and around 50 times thinner than conventional perovskite solar cells.Despite their thinness, the devices achieved some of the highest power conversion efficiencies reported for ultrathin perovskite solar cells…
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