Solar panels embedded in clothes can charge mobile phone

Nottingham Trent University has developed a way to embed miniaturized solar cells into yarn that can be knitted and woven into textiles. Tiny solar cells the size of a flea can allow wearers to generate electricity on the move and charge items like mobile phones and smart-watches.

The technology has been tested and proven to charge a mobile phone and a Fitbit. The cells are encapsulated in a resin which allows the textile fabric to be washed and worn like any other form of clothing. Measuring only three millimetres in length and 1.5 millimetres in width, the cells are almost invisible to the naked eye and cannot be felt by the wearer. For all intents and purposes, garments appear exactly the same as any other form of clothing despite having the capability to generate electricity.

Professor Tilak Dias, of the School of Art & Design, project lead said, “By embedding miniaturized solar cells into yarn, we can create clothing and fabric that generate power in a sustainable way. The clothing would look and behave like any other textile, but within the fibers would be a network of miniaturized cells which are creating electricity. This could do away with the need to plug items into wall sockets and reduce the demand on the grid while cutting carbon emissions. The electrical power demand for smart e-textiles has always been its Achilles heel and this technology will allow people to use smart textiles while on the move.”

Up to 200 miniaturized cells can generate 2.5-10 volts and up to 80 miliwatts in power. The university’s Advanced Textiles Research Group made a proof of concept textile of 5cm by 5cm size with 200 cells.

According to the researchers, this proved powerful enough to charge a mobile phone and a Fitbit. They say if 2,000 solar cells were incorporated into a textile, it would generate enough power to charge a smart phone.

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