Scientists have invented a new type of solar cell that can convert indoor ambient lighting into electrical energy. The solar panels they develop are organic solar cells. Although they produce very low energy, they can provide sufficient energy for IoT devices. As the Internet of Things expands, millions of devices in public spaces and homes will require electricity to operate.
The organic solar cells created by the team are flexible and inexpensive to manufacture, and are suitable for manufacturing large surfaces in printing machines. The light-absorbing layer of this battery has a mixture of donor and acceptor materials. These materials have flexibility in adjusting the battery. They are optimized for different wavelengths of light.
Scientists describe two types of organic solar panels, one with an area of ​​1 square centimeter and the other with 4 square centimeters. Smaller solar cells are exposed to a light intensity of 1000 lux, which can convert 26.1% of the light into electrical energy. It provides a current of 1V under ambient light of 200 to 1000 lux for more than 1,000 hours. The efficiency of larger solar cells is 23%.
The team said that this work has great hopes for solar cells that can be used in daily life. The team also pointed out that it is confident to further improve efficiency. The team plans to spend time optimizing the materials used for the panels. This organic solar panel is a big event for all kinds of electronic devices and helps to make homes all over the world greener.
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