Batteries made from paper can be an environmentally-friendly source of electricity.
Now, a Swiss startup is aiming to replace batteries used in small devices entirely (a process that’s already begun in Sweden).
Energy will come through perovskite solar cells previously developed in a research lab. Their properties and size can be tailored to customer requirements and device design.
Manufacture is by digital printing. Meaning smart watches, digital price tags or weather stations could operate permanently without the need for external charging.
Currently the solar cells can produce around 75µW/cm2 of power output at 1000 lux, with a lifespan of 10 years.
Others are working to replace silver in solar cells or produce custom-designed batteries using 3D printing.
