Organic photovoltaic (OPV) cells are potential candidates to drive low power consumption off-grid electronics for indoor applications. As the internet of things (IoT) expands, it is expected that we will need to have millions of products online, both in public spaces and in homes. OPVs are things that could meet their demands.
They are flexible, cheap to produce, and suitable to manufacture as large surfaces in a printing press.
In a cooperative effort, Swedish and Chinese scientists have developed a new kind of organic solar cell that has been optimized to convert ambient indoor light into electricity.
The scientists have tested two different organic solar cells where one of them has an area of 1 cm2 and the other 4 cm2. The smaller solar cell was exposed to ambient light at an intensity of 1000 lux, and they observed that as much as 26.1% of the energy of the light was converted to electricity. The organic solar cell delivered a high voltage of above 1 V for more than 1,000 hours in ambient light that varied between 200 and 1000 lux. The larger solar cell still maintained an energy efficiency of 23%. This work indicates great promise for OPV cells to be widely used in our daily life for powering the IoT.
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Date: Sep 24, 2019 @ 11:37
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